Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad26984b32b2ab0c…

MALICIOUS

PDF

89.6 KB Created: 2021-02-03 17:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e2417417a99e35eaedba9a5821270470 SHA-1: d417fcc79031644b60f2c4391f4e703a2a2a9df5 SHA-256: ad26984b32b2ab0cc3dd6da429e2a84e7e6dc0bc5941458016e5cd017b26f7c0
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a significant number pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights the use of disposable hosting and link farms, reinforcing the phishing or malware distribution intent.

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 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://seumenha.ru/wb?keyword=night%20lord%20guide%20mapleroyals PDF link annotation
    • http://vannabanyavsedela.xyz/57551313115rtd1r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446289/normal_5fdc71ab02d8e.pdfIn PDF document text
    • http://womenit.space/79661442698s9ogd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482854/normal_5fec6bb0d2853.pdfIn PDF document text
    • https://buruwezixefekiw.weebly.com/uploads/1/3/0/7/130738548/44cdc4c6058.pdfIn PDF document text
    • https://vorexumezekadan.weebly.com/uploads/1/3/0/9/130969740/8893643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_6011a16239c34.pdfIn PDF document text
    • https://cdn.sqhk.co/kagixepo/jiFhgjb/ridesexenukalunarawizol.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/QeTjhid/68466006212.pdfIn PDF document text
    • http://manaluw.iblogger.org/fibbage_3_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_5fe6961d7ffd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5ff0e928d8410.pdfIn PDF document text
    • http://art-practice.org/lujagewurefexezn5ab.pdfIn PDF document text
    • http://fresh-ita.space/88963060093k3rsv.pdfIn PDF document text
    • https://cdn.sqhk.co/joxopejufito/jahjqdH/music_party_ideas_for_toddlers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_600a16cb389b6.pdfIn PDF document text
    • http://tajeromodovo.66ghz.com/69523683338.pdfIn PDF document text
    • https://kiwepuzimogavuf.weebly.com/uploads/1/3/0/7/130776877/golupubamop_muzukuv.pdfIn PDF document text
    • https://cdn.sqhk.co/tunaluvum/Qid4hcz/26145300017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367000/normal_5feeb1a82ac84.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bogibil.rf.gd/wumarudelagukux.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_off00012052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12052 5444 bytes
SHA-256: 5814f5d982a1f65aa04d5736864e089799d46e74ecdec79333a24f876dd87a77
font_01_sfnt_off000132b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B5 11184 bytes
SHA-256: 6f775d743fc910c94b4fbbcff577b5131c7ab751e479bbd8b10892bddb7796db

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