Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fa3a2ab61ba99b…

MALICIOUS

PDF

80.2 KB Created: 2021-02-15 00:23:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8976cce84cc120dc8e68e50664e45bc8 SHA-1: b03a5b7027676cfdcdca84138ad9c09733382fd7 SHA-256: 62fa3a2ab61ba99b52bdd47ca85527cc31075c81ac8b3dde04a6396c4c8ab46a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of 'commando hack game' in a URL parameter and the overall structure point towards a phishing or scam attempt, likely using embedded JavaScript to facilitate redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/aws?utm_term=commando+hack+game PDF link annotation
    • https://viferoxabuged.weebly.com/uploads/1/3/4/2/134235394/1bad5dd2.pdfIn PDF document text
    • http://okrasote.info/buster_scruggs_soundtrackprgad.pdfIn PDF document text
    • https://nitevugumosu.weebly.com/uploads/1/3/4/5/134526644/58ba744b65d.pdfIn PDF document text
    • https://doxediseweroz.weebly.com/uploads/1/3/4/6/134634010/a1d124b92260f9.pdfIn PDF document text
    • http://vash-fasad.live/94050682969nwjbn.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/49689912796xzmbq.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/916011d6c3449.pdfIn PDF document text
    • https://mokekisinuru.weebly.com/uploads/1/3/4/3/134366850/xibikimaleko_bibiwodon.pdfIn PDF document text
    • http://blablablacar.online/pobenubikugeletafodyx0d6.pdfIn PDF document text
    • https://pasetesosetoje.weebly.com/uploads/1/3/0/7/130775590/jenudutizef_pojeji_junixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445544/normal_60184eccef5a4.pdfIn PDF document text
    • http://bio-ita.fun/xapijutavinoxawuwudezetyo26c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_601ec97255e1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fe5b7cc55b1f.pdfIn PDF document text
    • http://omynutural.space/ducky_one_2_mini_manual1an2h.pdfIn PDF document text
    • https://talurepif.weebly.com/uploads/1/3/4/6/134603846/kigijidikik_vipevilodom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fe01f4c3dc58.pdfIn PDF document text
    • https://wipabobape.weebly.com/uploads/1/3/5/9/135985954/tuzeve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476758/normal_602811642de81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f19f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19F 4792 bytes
SHA-256: 5ca68f15001339804fcb1f93960f0a85d3ce03536bb10889c31e4ba42aaec997
font_01_sfnt_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 10548 bytes
SHA-256: 2d02ed8781df6c331a62bd15e063f167598619d9ebae614f7788075e22eab5fe
font_02_sfnt_off000125b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B3 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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