Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f56908f228c3124…

MALICIOUS

PDF

78.0 KB Created: 2021-03-03 01:48:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 269407d99e3aa8e72fcccc443de8381c SHA-1: b2589b90d7a706cad2b42270877879e5b48a7f40 SHA-256: 6f56908f228c3124e07ab578bc45b809531cbf86214c1fe0f39868b332a55701
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://fokemale.ru/strik?utm_term=dremel+4200+will+not+turn+on PDF link annotation
    • http://kengoru.space/11369722754q792b.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/igdhbfq/jelly_shift_app_store.pdfIn PDF document text
    • https://guserokofetaw.weebly.com/uploads/1/3/4/3/134341966/a9c2a0da.pdfIn PDF document text
    • https://birulivalofa.weebly.com/uploads/1/3/4/0/134013213/vuzujapadirul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419225/normal_5fff7837a4e57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459787/normal_5ff24e406281f.pdfIn PDF document text
    • https://seritixatot.weebly.com/uploads/1/3/1/0/131070849/6390660.pdfIn PDF document text
    • https://terigemi.weebly.com/uploads/1/3/1/8/131856376/3760191.pdfIn PDF document text
    • https://cdn.sqhk.co/noremixujor/ukicrCR/yandex_navigator_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_601db2a6d8e7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368746/normal_5fcd52975fa5a.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/sgil8ie/baby_back_ribs_on_grilled_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/gjjj0p1/zig_zag_rolling_papers_meaning.pdfIn PDF document text
    • https://lobogisotu.weebly.com/uploads/1/3/4/8/134870795/tokox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_6011350f1d843.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/telasebisu/nursery_rhymes_website.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/bazozegu.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/appium_android_driver_python.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/bikaner_weather_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAA 4896 bytes
SHA-256: 5a451626db58dafe4211063c55792a277ad71d1e9fae66dd3a373b715095c5d0
font_01_sfnt_off0000f055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF055 10696 bytes
SHA-256: b72bb3da0ca5edabb71f5b7bc29df90298d9e28ef30ae152dc14f8f4426ecc6c
font_02_sfnt_off00011525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11525 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660

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