Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc007b81f4959b89…

MALICIOUS

PDF

83.5 KB Created: 2021-02-13 21:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 0291fb491801075982cac52043734b25 SHA-1: dea44875c8894031f119668427db0e53d84fa262 SHA-256: cc007b81f4959b89f0faad0b34303da7bddc49a7c67dbd56a5772b7b2710fe87
146 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a link farm and contains PRC/3D content. Multiple external URIs are embedded, suggesting a phishing or malware distribution attempt. The document body contains obfuscated text and references to 'Belgariad series pdf', likely a lure to direct users to malicious sites like https://maypoin.ru/wix?keyword=belgariad+series+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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://maypoin.ru/wix?keyword=belgariad+series+pdf PDF link annotation
    • http://jiwujat.iblogger.org/38151903126.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/auOZAhe/24338347881.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503214/normal_60263ea788c40.pdfIn PDF document text
    • https://winateminapalem.weebly.com/uploads/1/3/4/0/134041456/8514000.pdfIn PDF document text
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/7413952.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/sijdr0b/19207469673.pdfIn PDF document text
    • https://safubijob.weebly.com/uploads/1/3/2/6/132682970/2806075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_601de28d8a153.pdfIn PDF document text
    • http://julaximufe.66ghz.com/microsoft_powerpoint_word_search_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/juvekuvop/XJ9Ovgi/lbs_to_kg_conversion_formula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471474/normal_5fd65324ac66a.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/vNjgAzP/tesazuj.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/jihctRI/romona.pdfIn PDF document text
    • https://funopazotasar.weebly.com/uploads/1/3/1/0/131070342/3991888.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vatasinunevuto.epizy.com/crawl_outta_love_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/bamorogogaburitikotaxofom.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/biocentrism_by_robert_lanza.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/bensham_manor_school_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/40608846344.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_off00010b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B49 5260 bytes
SHA-256: 64cdd8da3dbec695a75118d77cb5050e9cd0ef8ce4b7fc9aa79eaff22297ad68
font_01_sfnt_off00011d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3E 10276 bytes
SHA-256: 472b4c4baa17020b2aa01867fc11018e3f56a57b0b6ee6074e23694e3b06b2bf

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