Malicious PDF — malware analysis report

Static analysis result for SHA-256 04834ae52299c62e…

MALICIOUS

PDF

81.3 KB Created: 2021-03-17 16:02:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: eebc1d33e282cf3ee3f696d693ff4680 SHA-1: e9c39f173e51b071fec9c503eefcfba1378bb9e5 SHA-256: 04834ae52299c62e518acb0d25f7986a9c064ac95e615110638d0ca37a9e7969
186 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to a 'Le creuset casserole size guide'.

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://midufefew.ru/123?utm_term=le+creuset+casserole+size+guide PDF link annotation
    • https://wilaruxade.weebly.com/uploads/1/3/4/8/134865150/fetapupow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482206/normal_5fda418cd3622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_60233a96c9d81.pdfIn PDF document text
    • http://webcam-model.online/suketolutunumitopanadegatc85u5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369643/normal_5fffd95d19c5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499629/normal_602a37754f44c.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/hbphdzz/infectonator_3_all_reporters_outfits.pdfIn PDF document text
    • http://verification-help.business/samimuxavosogutovutazodxir2d.pdfIn PDF document text
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/5455848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_6032f472515fc.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvevalor/Zjejfgu/rupeboxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://99516632-72ce-40f3-a9a1-a01c91361c65.filesusr.com/ugd/e42c35_d309bf2dd178427f8c9ab3cb91f8165a.pdf?index=trueIn PDF document text
    • https://761e60ea-5e0e-4c43-b4c2-f6a9045c608d.filesusr.com/ugd/545033_436d19838bc24fc0aa4a3d8eb2d8ebcd.pdf?index=trueIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_65c99aaf528345bb98389b3a2ccd9485.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_bf0eec1eb07d428ab8c73439d738bf22.pdf?index=trueIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_bc59cea0cf7b4408bbb300999d441621.pdf?index=trueIn PDF document text
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_da19083ef9ef419a889c870b55c1ce6c.pdf?index=trueIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_f82ecd8ea3a143e0980252b703cd0125.pdf?index=trueIn 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_off0001007a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007A 5100 bytes
SHA-256: 4d2c922c7fbe7db47556560e6d04904f16e93214ce6932441045d75c068a4ade
font_01_sfnt_off000111e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111E9 11256 bytes
SHA-256: 964bdcb477a1a407eac6d2f33de0f407d913b364c3c763b442b992e2aed9ce62

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