Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0444c2872dc1eb…

MALICIOUS

PDF

74.4 KB Created: 2021-02-03 05:58:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5dcc81d7b4a292143cd75b8905978586 SHA-1: 491e57cf699aae49f33f123c2a28758143247028 SHA-256: 2e0444c2872dc1ebcd55863f365d99e80e4fd7ad96a30ece4c67cbdae0d28822
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=bal+ganesh+photos++hd In PDF document text
    • https://cdn.sqhk.co/tuforalogidu/d5djiji/pocket_rocket_2_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/gjEhalR/72847975407.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/bNpiejh/dogipevesodivujejudizir.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/79bfcf0f.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/jiM2hbS/bugsy_siegel_house_lake_arrowhead.pdfIn PDF document text
    • https://cdn.sqhk.co/bogabixexuja/4heLjem/94422575005.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/pCWjiib/lupude.pdfIn PDF document text
    • http://waxenotesanil.22web.org/tadetorolugagijewunebasox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://majuditatip.rf.gd/vunowefavogetakimitakene.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/99929683117.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/hotels_in_nyc_with_bed_bugs_reported.pdfIn PDF document text
    • http://fosoxubap.epizy.com/javascript_date_now_iso_format.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/fire_safety_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/adelaide_train_timetable.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/dujinipaze.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE818 5172 bytes
SHA-256: 5cfdf429a505f19fa8ca9c8a9d219f91740eee91adf895954212e5c80fb65e93
font_01_sfnt_off0000f9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B3 10380 bytes
SHA-256: fa29eaaaa884e93da26241cf72eb042f5a58c48b81682377391d996e67bbfc12

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