Malicious PDF — malware analysis report

Static analysis result for SHA-256 374d2942522a83c0…

MALICIOUS

PDF

81.1 KB Created: 2021-03-19 22:08:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f32d771f9ec44d03dbf4a2d774e44484 SHA-1: 5699bdaf501fc859695e50bf456c399705dbc6f9 SHA-256: 374d2942522a83c05b31f9c386ad590912558cbcb02ca6d0b899d110cffcdc23
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a domain associated with phishing and link farming. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for phishing or to download further payloads.

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 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://ponafet.ru/wix?keyword=sony+tv+live+indian+idol+voting PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405419/normal_601299bbc7b46.pdfIn PDF document text
    • http://ccckkkkk.space/lumen_histology_guidenybqi.pdfIn PDF document text
    • https://wudumimimi.weebly.com/uploads/1/3/4/3/134356267/sorerasanan.pdfIn PDF document text
    • https://walowopus.weebly.com/uploads/1/3/5/2/135295279/e013fa0fc.pdfIn PDF document text
    • http://remontnatali.ru/dean_koontz_net_worthb0bed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481289/normal_60082fc8b63c6.pdfIn PDF document text
    • http://skidki-day.store/aararum_kaanathe_aarodum_chollathe_songks5rg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392207/normal_5fe28d5a39441.pdfIn PDF document text
    • http://rolorutebu.sportsontheweb.net/72416230799.pdfIn PDF document text
    • https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/salesavegexitakosuni.pdfIn PDF document text
    • https://danivuzi.weebly.com/uploads/1/3/2/6/132681213/6355385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406228/normal_5fcb592847c16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_6050b55d29121.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://rodexiguv.onlinewebshop.net/economist_september_2020.pdfIn PDF document text
    • https://3f9320ff-391d-49df-b192-c557e211a93c.filesusr.com/ugd/469aea_2e8064e3f001410196c6cc39c086e930.pdf?index=trueIn PDF document text
    • http://belunovozexuse.rf.gd/cqc_inspection_reports_domiciliary_care.pdfIn PDF document text
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_4e218160101b4ab5aaad8830d9b3df03.pdf?index=trueIn PDF document text
    • http://wofabor.rf.gd/36284514682.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 4772 bytes
SHA-256: 61881ebe86813b330df3e0057343cb9c5bb93893dfa119134452b04f1de383c3
font_01_sfnt_off00010375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10375 10884 bytes
SHA-256: 6605289d5503771a6525294a463aaadb58269a471e9dc9f255dfed01e251daf9
font_02_sfnt_off000128c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128C4 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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