Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a28a609f9635fb…

MALICIOUS

PDF

74.7 KB Created: 2021-03-23 00:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8603fdedc91521eda7814373bc3b8692 SHA-1: 1258844b30dbe0223bc2f80e33e45565bccd526e SHA-256: 96a28a609f9635fbb2ef5e3cebb0f7dce80d0be96d181bf813d5cab425da88c2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for a link farm and an embedded URI pointing to 'lozipotod.ru'. The document body, though heavily obfuscated, suggests a lure related to hacking. The presence of numerous external links, including one to a potentially malicious domain, indicates an attempt to direct users to external resources for malicious purposes, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://lozipotod.ru/wix?keyword=how+to+hack+animation+throwdown+ios PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409614/normal_5fe5193d96fbf.pdfIn PDF document text
    • http://health-top.ru/874001782417tsvw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_604353d944009.pdfIn PDF document text
    • http://kefets.xyz/ladomodepexosopebib87fcb.pdfIn PDF document text
    • https://jozegolufipiz.weebly.com/uploads/1/3/0/7/130776065/gekanuxewegu-niposeniguw-bodosiselamajuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_602027b106449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458848/normal_6054c2fe0d4dd.pdfIn PDF document text
    • https://mirenixumevi.weebly.com/uploads/1/3/5/3/135309561/85eb6.pdfIn PDF document text
    • http://salopkisa.website/can_i_use_a_straight_talk_phone_with_verizon_prepaid8pxlk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471481/normal_600658544e579.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5fe1210ab1c0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bdb6495-4d76-44b1-bde3-96ef806d0cce/79857839646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f8ba9f-bcf6-4c47-ae1a-6bc92797accb/how_much_does_it_cost_to_repair_mac_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/d_d_4e_paladin_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/relationship_between_voltage_and_current_in_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/37282891787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f1e4fcb-1d5e-4e60-9763-10629a4017c4/36128452991.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/skyscan_clock_28600.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/57042027687.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_off0000e7bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BF 5264 bytes
SHA-256: 6aa47588c34564f501098d8391c038e7a42c187e9d52a7ba3bd2080f439d8fdc
font_01_sfnt_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 10536 bytes
SHA-256: 6c046f54cd16c4fb6ba9e2b6051a7933be19114122400b81e094c890a0479a9d

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