Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 24eb80bc847c65af…

MALICIOUS

PDF / .VIR

418.3 KB Created: 2023-06-16 18:03:11 Authoring application: Serif PagePlus First seen: 2024-05-07
MD5: 673900f41264dbf673724e1ef35eb5d4 SHA-1: e999f5b217a2b0e4f895626ddff6ea089803f0e9 SHA-256: 24eb80bc847c65af905eeb8d08b77146357de84745f1c59755f27a027f4dc07e
276 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious intent, including random and SEO redirector links pointing to suspicious domains. The critical SE_VIRAL_VIDEO_CLICKBAIT_LINK heuristic and ClamAV detection further confirm its malicious nature. The embedded URLs suggest the document is designed to lure users to download further malicious content or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9240

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://adservice.google.com.pg/ddm/clk/425484003;227454619;f;;%3F//blue-zones-national-geographic-pdf.ukbluepoppyseeds.com/415.pdf In PDF document text
    • http://the-contemporary-reader-10th-edition-pdf.houstonlimousineservice.net/jozasowa.pdfIn PDF document text
    • https://dupupajaz.dopobub.sbs/70.pdfIn PDF document text
    • https://science-and-geography-3-richmond-pdf.kileteros.cfd/76.pdfIn PDF document text
    • https://aion-power-level-guide.totuxukowu.cfd/648986.pdfIn PDF document text
    • http://miwib.iptechnologytransfer.com/wadumavugunamowu.pdfIn PDF document text
    • http://adservice.google.com.eg/ddm/clk/408405163;208572896;n;;%3F//wubatosol.imnoslave.info/728176413.pdfIn PDF document text
    • https://the-bye-bye-man-parents-guide.gubakofan.cfd/5587869.pdfIn PDF document text
    • http://adservice.google.com.sa/ddm/clk/300948314;127869103;e;;%3F//gusab.tailoredart.org/tonugove.pdfIn PDF document text
    • https://sorinipim.libegifuz.cfd/pefop.pdfIn PDF document text
    • http://mezujof.starspring.org/3998211.pdfIn PDF document text
    • http://raul-gutierrez-saenz-introduccion-a-la-e.carbuyings.com/4001268.pdfIn PDF document text
    • https://adservice.google.com.pe/ddm/clk/445204615;249060672;c;;%3F//aristotle-nicomachean-ethics-pdf.talamagux.sbs/501.pdfIn PDF document text
    • https://lujerig.yenene.co.za/292013499088221548?sonurisowagoliredipikasokafexokidasebepepotebumisuvuloxukivuxotizuxerewixugekununaxanuwaxafogupe=laruvirafupifiwezewoturaluvadukonagunivirisozevawekakobonaninuxubirumatolelemogazunizasakakomivipapalifuxitonibizevizawogujanipatiramojetodazazajejigawoxusotuvajumunasezolobuxodurumotadusoxiwituluropasa&utm_term=ultrasonido+pelvico+abdominal+pdf&benupujagubomowawesifivojazuvifawisosutamavagexanifenuwezijeluvitisarataredukosifipi=wejomawebirojigobodotedumavenewulomirixuxezesemarofemidusupejodekeramevolelarolojikovanuvipijelixuvowakudogeIn PDF document text
    • https://adservice.google.com.ag/ddm/clk/425484003;227454619;f;;%3F//don-t-rain-on-my-parade-sheet-music-pdf.lanosag.cfd/talupozi.pdfIn PDF document text
    • https://lujerig.yenene.co.za/292013499088221548?sonurisowagoliredipikasokafexokidasebepepotebumisuvuloxukivuxotizuxerewixugekununaxanuwaxafogupe=laruvirafupifiwezewoturaluvadukonagunivirisozevawekakobonaninuxubirumatolelemogazunizasakakomivipapalifuxitonibizevizawogujanipatiramojetodazazajejigawoxusPDF link annotation
    • https://lujerig.yenene.co.za/292013499088221548?sonurisowagoliredipikasokafexokidasebepepotebumisuvuloxukivuxotizuxerewixugekununaxanuwaxafogupe=laruvirafupifiwezewoturaluvadukonagunivirisozevawekakobonaninuxubirumatolelemogazunizasakakomivipapalifuxitonibizevizawogujanipatiramojetodazazajejigawoxusotuvajumunasezolobuxodurumotadusoxiwituluropasa&utm_term=ultrasonido+pelvico+abdominal+pdf&benupujagubomowawesifivojazuvifawisosutamavagexanifenuwezijeluvitisarataredukosifipi=wejomawebirojigobodoteduPDF link annotation
    • https://adservice.google.com.hk/ddm/clk/295204063;122181591;w;;%3F//lafovifir.slothoki96.com/subuxatewoj.pdfIn PDF document text
    • http://adservice.google.fi/ddm/clk/310682673;138356009;g;;%3F//activit-manuelle-sur-la-semaine-du-gout.qaengineering.net/powodoneji.pdfIn PDF document text
    • https://adservice.google.rs/ddm/clk/300948314;127869103;e;;%3F//sevilazof.mijamago.online/bapogetekijubofa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off000631ae.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000631ae.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000631ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631AE 11092 bytes
SHA-256: 545f995b8c805c598f79d6b0b240694f002e4b79b7c9e262f1b3489204a4da8f
font_01_sfnt_off00064b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B25 18320 bytes
SHA-256: bb8832356bf994b1f4509f4729538f24eb041b53a40745d1eb8945400e327009