Malicious PDF — malware analysis report

Static analysis result for SHA-256 9465071c1f738b85…

MALICIOUS

PDF

76.9 KB Created: 2021-03-06 15:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 42c9c38f484a281372d1611c79797801 SHA-1: 32d82f188543f5f094296957e274880969835406 SHA-256: 9465071c1f738b852d70b2329c38662ec6e58816f9c89702e6e45ba4fb0b3209
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/wix?keyword=geometry+dash+world+mod+apk+full+version In PDF document text
    • https://sagojuxejuzogug.weebly.com/uploads/1/3/4/5/134598596/6aca522ff0d191.pdfIn PDF document text
    • https://guvopizap.weebly.com/uploads/1/3/0/7/130776702/aa5a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457849/normal_6013b53781992.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475874/normal_5fc6bc5e2bc34.pdfIn PDF document text
    • http://bubobimurasawe.iblogger.org/buvexugemikal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5fc7053211924.pdfIn PDF document text
    • https://pujonavow.weebly.com/uploads/1/3/5/9/135958036/0e30136425b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_6018db1572542.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450890/normal_5fe978e17fedd.pdfIn PDF document text
    • http://soxudenuwunala.22web.org/real_estate_agent_training_online.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/pomaxa/weekly_plan_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/34935929968.pdfIn PDF document text
    • http://kesajebofiruzu.epizy.com/28781118092.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/33824782390.pdfIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_516c7388d6b449d3a0905c42995013b1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/tartil_quran_paling_merdu.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_78e8df0f7dba43699b22e1ec6443f769.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/gixibuvudowuturibowotugu.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_off0000f01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01B 5628 bytes
SHA-256: 3a6b233c82dcbda57c79ab22c01fffdf0dea6f767fea52a769b0a8682fd7cad8
font_01_sfnt_off00010332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10332 10252 bytes
SHA-256: fdab71336c29169acbbd399b630e0ca4d64385d17fabd6681743be5ec9cb7904