Malicious PDF — malware analysis report

Static analysis result for SHA-256 6195ed7cded67bf1…

MALICIOUS

PDF

73.0 KB Created: 2021-02-21 06:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce20d2887a32a3dbb778e707515a254e SHA-1: 002051c4c89f6ca3d8f002e58c3c23c002d845a0 SHA-256: 6195ed7cded67bf1f417a95d26bbb4c82decafbcae76af743a4f41b72b626371
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://bologen.ru/wix?keyword=ellipsis+manual+book PDF link annotation
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/ba4fe.pdfIn PDF document text
    • http://worldthailand.fun/30148173451veem1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_601bfcaa33995.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403951/normal_5feba62e79878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5fdb170b15e20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476015/normal_5ff7722b44eb7.pdfIn PDF document text
    • https://bukusafirede.weebly.com/uploads/1/3/4/2/134266240/20bd76d4f2.pdfIn PDF document text
    • https://giligigava.weebly.com/uploads/1/3/4/4/134494785/1628532.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486982/normal_5fe2c947a5900.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420449/normal_5fe434da3d72a.pdfIn PDF document text
    • https://pagejenaxupiwig.weebly.com/uploads/1/3/4/3/134383440/67bb9515fd3c83.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/milady_chapter_16_test_answers8vy4p.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/jusuberu/japijagof.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/39778540508.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/emergency_wallet_card_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/22292737885.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/longman_dictionary_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/24242544469.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/namukkore_akasam_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_off0000e1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FD 5028 bytes
SHA-256: 3d2bd346165d3d5ca80811343335bdb7274fc498f23f716ce4e1ac8a9191ed1d
font_01_sfnt_off0000f300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF300 10420 bytes
SHA-256: 0f35b4d997618b4ae43a776a52d98763e343f74b80877e6e3506379799ff3322

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