Malicious PDF — malware analysis report

Static analysis result for SHA-256 307769c1264da7f8…

MALICIOUS

PDF

69.8 KB Created: 2021-02-21 20:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6ff9ee42fa281d62a875dfa0f35b4642 SHA-1: ebd4c0bb8fa7f0ac2ec74fabd30df27976fea0bf SHA-256: 307769c1264da7f8f60ff459f68585aa5fb3c1d48aa45ce106cfd7172714c9d4
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://baarspo.ru/123?utm_term=how+to+reset+a+motorola+g7+power PDF link annotation
    • https://betixajivuf.weebly.com/uploads/1/3/4/9/134900014/902634.pdfIn PDF document text
    • https://cdn.sqhk.co/vefuwebilux/dWhfFhb/starz_cinema_tv_schedule_west.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/boAgj0h/wing_hero_collection.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421342/normal_5fdbacfa5a171.pdfIn PDF document text
    • https://pizopivawot.weebly.com/uploads/1/3/5/3/135347149/403a9eb544b5548.pdfIn PDF document text
    • https://velineninebag.weebly.com/uploads/1/3/4/6/134608195/9c4a5.pdfIn PDF document text
    • https://cdn.sqhk.co/xovenekot/LjiItGQ/12612043031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409630/normal_6019f63a22085.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/Ihciegf/65016188797.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/QzTjihe/97859423626.pdfIn PDF document text
    • https://fepuvagugi.weebly.com/uploads/1/3/4/7/134767339/rutav_torudopuwaveb.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/NVDjfow/62211920810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461219/normal_6018b25cc4a5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_603037842117c.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/tenunud/dawn_of_man_animal_guide.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_off0000d267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD267 5272 bytes
SHA-256: f87447f7d81d1e7a9b91586db3075bc8945c6daae38ace4c66f896453db17291
font_01_sfnt_off0000e45a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45A 11196 bytes
SHA-256: d4f4033cc016dcaf49921a53b6f95591359f6b2705a5ef951f69fd4ec0625985