Malicious PDF — malware analysis report

Static analysis result for SHA-256 6314c996ec189420…

MALICIOUS

PDF

74.1 KB Created: 2021-05-25 12:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 30fec1c693905cf689b3c857d1c9b31f SHA-1: 3e504fec85c8ab9743d5eb1ce0fcf1e2c69b077a SHA-256: 6314c996ec189420fc11d8f147b90e3d015916139b2653d90c1d1e4559837687
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or malicious content distribution attempt. The document contains a large number of external links, suggesting it is part of a link farm or phishing campaign designed to redirect users to potentially harmful websites. No scripts were extracted, but the presence of numerous external URIs points towards a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://leonvi.ru/strik?utm_term=how+to+clean+a+weber+spirit+grill PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414357/normal_604828a725e46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447101/normal_6007550407b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_60289786b41d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480884/normal_603bfa7d46a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_60603ad46257e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_5fcc7137f2831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_6022450dd5229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368468/normal_600301351d8ed.pdfIn PDF document text
    • https://tumozoredupoki.weebly.com/uploads/1/3/0/9/130969837/8697894.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fcaedfeb886b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_60372fa2606ca.pdfIn PDF document text
    • https://wawanuxofidote.weebly.com/uploads/1/3/0/7/130775818/xivebefikejut_sexufirapomelu_tuzoxudep_kawoxowanid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_601a535ca2f0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418791/normal_5ffe6fd550367.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/bf5a14f6-a118-41c2-afcb-9d28690a42f8/sojiwomotejilipawisovepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a04ad92-67a3-477a-b33b-9c28a23b14d1/51989473937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4fd67cc-8a96-4e75-9670-e3a9bbe0cf33/download_mortal_kombat_chaotic_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/game_one_piece_bounty_rush_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/bafixev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/435ebe14-84bd-4e1a-86c4-a5fabe8bedc8/73420430027.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_off0000e5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C9 5292 bytes
SHA-256: 55a4ade8ffc8e472a98996b8e8ed3febaac3620c20ac92dbedcd7ff10a154494
font_01_sfnt_off0000f7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E9 10616 bytes
SHA-256: dab8a1ed681e23f1d88131b3a38ae5ea8e4930c31b25753d580a0013ebaa58ca

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