Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b2af87ecc41773…

MALICIOUS

PDF

64.5 KB Created: 2021-01-06 02:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 71546253e4988a4659f259fef3a41afd SHA-1: 77462820eb5c23617ff158ab990d94f559ab10bf SHA-256: 68b2af87ecc417731e57e5ef9ff7c09d8416c4d0f6ac5c5da62f4699eb07d990
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one critical heuristic identifying a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to templates, likely to facilitate phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://traffmen.ru/aws?utm_term=lip+gloss+labels+template In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/posumiwuwolosurun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474191/normal_5fab3b495a7c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467936/normal_5fd10db6a53a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5fc1769d4e2b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384145/normal_5fa952d672764.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_5fbe70ca3e441.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/lixisariwulo/22245865996.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/81991582339.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/daniguz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5792eb3-c381-4ad4-b203-017ad5634367/mensaje_del_papa_francisco_cuaresma_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/schedule_il-e_eic_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/business_model_canvas_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/rerifixerusenenuxamar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70de799c-d9c7-4831-b82b-1c69341b8542/stardew_valley_sewer_key_cheat.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/56146608454.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_off0000c199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC199 5124 bytes
SHA-256: 6a85ecb3b7f6cb2d66dd0a400f852896d03e5e5962a8c77e0466a8d998d97157
font_01_sfnt_off0000d2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FA 9968 bytes
SHA-256: 98771a665a3ea766ea316183a3fae22512a17ace91ad3333df97cd5e3f1f1bce

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