Malicious PDF — malware analysis report

Static analysis result for SHA-256 8025b1444a26f4ee…

MALICIOUS

PDF

65.6 KB Created: 2021-02-22 06:56:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3aa2c16216bc70998bf7caeab1ce808d SHA-1: b309a7c4115844cfe9c62019f65448dcca778a32 SHA-256: 8025b1444a26f4ee289a075158b4e9f4af137421a68d594a6d8cc1a0965c2d7d
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://druttle.ru/wix?keyword=glencoe+physics+pdf+download PDF link annotation
    • https://cdn.sqhk.co/nigalasiline/eC8hbvs/cut_the_rope_handy_candy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416490/normal_600def1265599.pdfIn PDF document text
    • https://nukoxola.weebly.com/uploads/1/3/1/3/131380146/xuzajasaxu-gopadimomafoke-gejiwowogu-tivepu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_6022622889a8a.pdfIn PDF document text
    • https://sawinabepetejex.weebly.com/uploads/1/3/4/7/134714359/459454ef440191c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473947/normal_5fe9ec58662b0.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/jgGP8ji/ripidinafufonalupuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420910/normal_5fd85acab87be.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/giNhfIs/kuvisakamumekomoku.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/e9UUhhZ/march_of_empires_assistant.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/yhicYjh/80745468813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490918/normal_601e944052acd.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/gcGkhcC/81181989290.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470825/normal_5fde8aef906c9.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/xY1gjog/82401194585.pdfIn PDF document text
    • https://cdn.sqhk.co/jarebomu/ggiPoje/81764629759.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwovodegi/eimihT5/lara_croft_go_cave_of_fire_deadly_steps.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/lezerawe/losam.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/wovixaxoxamigibewagi.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/faledivo.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_off0000c516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC516 5372 bytes
SHA-256: ad7fbf3d73628ca33a6a0df70ff7aaec12d2dd51c30c14301c483f273391573a
font_01_sfnt_off0000d77f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77F 9952 bytes
SHA-256: d4fdddf87a435b07f425ac91c2e483cf71444f0aef53fb0f85485d8a78f7ebc0

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