Malicious PDF — malware analysis report

Static analysis result for SHA-256 883b80de6f0ab1b6…

MALICIOUS

PDF

76.0 KB Created: 2021-02-20 20:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 059c29ec5fe2c3d1fb83333dc8706557 SHA-1: 39b598f6abc933f01d51becd399122ee9d63ad79 SHA-256: 883b80de6f0ab1b68ab864ce30b8f27f03f6b88002097d019ae5dc480cc9f0b6
196 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
  • 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.
  • 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://maypoin.ru/wix?keyword=cualitativa+y+cuantitativa+diferencia PDF link annotation
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/f2347993d95.pdfIn PDF document text
    • http://bigwin-1xbet.fun/care_home_operations_manager_job_descriptionlym59.pdfIn PDF document text
    • http://lunesygets.xyz/3192064723lxb56.pdfIn PDF document text
    • http://crubr.space/carrie_underwood_song_lyrics_two_black_cadillacs9p7nc.pdfIn PDF document text
    • https://ruxebawinafa.weebly.com/uploads/1/3/0/7/130776533/xuxetap.pdfIn PDF document text
    • http://stnold.com/kenmore_window_unit_air_conditioner_manual4n1of.pdfIn PDF document text
    • https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/likusizi.pdfIn PDF document text
    • https://lefagetali.weebly.com/uploads/1/3/2/3/132302894/33121b5.pdfIn PDF document text
    • http://losqutoq.online/42932764612p82s7.pdfIn PDF document text
    • http://qunit.space/sowujimajimosaloguxetintcjiq.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/zedilegol/atari_ballance_game_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/aflac_printable_claim_forms_vision.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/unikey_win_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/13078393841.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/chhath_video_song.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_off0000ea87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA87 4904 bytes
SHA-256: cdd72e92ac5977f8e9ab24c6ab29132fedb75fa15d3822b059a662fae76e4eba
font_01_sfnt_off0000fb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4E 11788 bytes
SHA-256: cf13b6dbe432845caa504e7c85e0267296b9c22a2817d7d7fdf887be6651b21a