Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf327ab39342f52…

MALICIOUS

PDF

71.4 KB Created: 2021-02-17 13:03:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 18092ee3df79625ea00656dee6ae827f SHA-1: 9b1dd42102d8e8d475d90cb709d8c81f8c1cdcc4 SHA-256: faf327ab39342f520b203542de5d748ff91a6c10ffd0daaee1c1c57219a8e60b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://bologen.ru/wix?keyword=psp+themes+ptf+anime PDF link annotation
    • https://gozexorajive.weebly.com/uploads/1/3/4/6/134610068/bozukepop_jokit.pdfIn PDF document text
    • https://tekaxudifen.weebly.com/uploads/1/3/5/9/135992886/32332de45a7e8bf.pdfIn PDF document text
    • https://zebakikalelu.weebly.com/uploads/1/3/0/7/130775248/nuneposutizoz_sojinopu.pdfIn PDF document text
    • https://bepupoxusiboma.weebly.com/uploads/1/3/4/8/134847186/1811806.pdfIn PDF document text
    • http://vorasim.iblogger.org/jubitazokinekukisesa.pdfIn PDF document text
    • https://sosanibizug.weebly.com/uploads/1/3/2/6/132695556/kileweguzaziju.pdfIn PDF document text
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/wakenolepujume.pdfIn PDF document text
    • https://vulopinuvi.weebly.com/uploads/1/3/1/1/131164419/f3891.pdfIn PDF document text
    • https://berigagagek.weebly.com/uploads/1/3/1/3/131384675/57f220ca09a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tawovojo/angular_number_format_currency.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/89618376381.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/97566973884.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/asvab_for_dummies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/fewuvigavefigejudi.pdfIn PDF document text
    • http://sisadeb.rf.gd/handover_report_mail.pdfIn PDF document text
    • http://gumigojozupe.epizy.com/barber_shop_business_plan_template.pdfIn PDF document text
    • http://jabukejezari.epizy.com/3d_custom_anime_girl_creator.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/arrl_antenna_book_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/digoputoxesepapabaxagiw.pdfIn PDF document text
    • http://gobonelore.epizy.com/tauren_druid_leveling_guide_classic.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E1 2972 bytes
SHA-256: 0bf9469f6cbf64c0badb18945d2c2eb4c7a4e472e7aacda42aec409c4e2fe86d
font_01_sfnt_off0000db64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB64 5016 bytes
SHA-256: 309eff4eae68b614bbc7c2c950a9beee0defdc592f15f24887577a9778732717
font_02_sfnt_off0000ec51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC51 10380 bytes
SHA-256: adeeda01bbd1b346db02cdaa63506d72f098f2e9b95efcc51de05d76873cf61b