Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60cbc8ea535d8f4…

MALICIOUS

PDF

82.8 KB Created: 2021-02-12 04:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bb178f6b228d2d9dc86216bcbcb71202 SHA-1: 22eb4489ee951ae50cf89f6a364b35f6aca045e0 SHA-256: b60cbc8ea535d8f4e48e3ec975a5660d50318768552a35bbb1f18a42b734314e
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://jacksth.ru/123?utm_term=susan+miller+january+2020+virgo PDF link annotation
    • https://cdn.sqhk.co/suxupijisajo/BUPhegf/depinix.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwipabobatu/id59kjd/dituje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468259/normal_5fd0bcc2e5c10.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/PjjaTge/mutejapetuvowewur.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/ijNihib/space_gangster_2_mod_apk_happymod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410416/normal_5fcb9ad0b177e.pdfIn PDF document text
    • https://cdn.sqhk.co/xipovowimugo/lhbuhji/flight_simulator_3d_game_for_pc_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5fcd9c7607956.pdfIn PDF document text
    • https://bidopafogusiw.weebly.com/uploads/1/3/1/0/131070115/7951f28dcafbee.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/sidR0jc/30673183483.pdfIn PDF document text
    • https://nujokolove.weebly.com/uploads/1/3/0/8/130874035/burufopifemo-zeref.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458622/normal_60220d00dcafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374198/normal_6016117dd14a0.pdfIn PDF document text
    • https://sejuxotanodefif.weebly.com/uploads/1/3/5/9/135957191/zubopomano.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452152/normal_601cdecfe1951.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001076c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076C 5620 bytes
SHA-256: c54b6576c174fbf6dc5a1f40dc9b77bcd3fe46e6a25cb93f3072e4221aec9ba9
font_01_sfnt_off00011a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A81 10588 bytes
SHA-256: a823c54bd6b0e9b86805f5303fd14dc284438eee43b59d5fb4b44a1762fb9850