Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01ee44cf718ef18…

MALICIOUS

PDF

79.9 KB Created: 2021-03-24 02:08:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: eddf6c7cdb126ee8bc01d4bf6aa6cfed SHA-1: 5371fcb8316bdf9a64e5ba36481ac74fbd6fc3fd SHA-256: b01ee44cf718ef18a45c4b126886814c5631d261effadd08de9e645e26487bba
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-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://leonvi.ru/wix?keyword=right+triangle+trigonometry+worksheet+with+answers PDF link annotation
    • http://fulukegoror.getenjoyment.net/septoplastia_e_turbinectomia.pdfIn PDF document text
    • http://degakak.sportsontheweb.net/66111607927.pdfIn PDF document text
    • http://blog-millionaire.buzz/factorizacion_al_cubo2a12s.pdfIn PDF document text
    • http://creamwalls.space/50000943776nyqay.pdfIn PDF document text
    • http://bamirajewenexo.medianewsonline.com/gemadifagobiji.pdfIn PDF document text
    • http://deflecfcvy.best/garizefusuxobuxasumoaomw.pdfIn PDF document text
    • http://negifowutagur.mygamesonline.org/ominous_octet.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/34486917658.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/jjheTjb/occupational_health_and_safety_act_of_1970.pdfIn PDF document text
    • http://getfreecreditreport.info/arctic_temp_ice_machine_manual8puox.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/demevaletemijugokozam.pdfIn PDF document text
    • http://volosaty100.xyz/is_american_eagle_an_ethical_brand50jp4.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/aJPIZgg/mastercraft_x23_surf_settings.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/134053599385mx09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72cbe82-a526-40b8-a434-3dc461fba34d/zafepodawaninabeluwib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/013293c1-f044-48ce-b5d2-d8009511d664/nesevejabizawugediz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf24da8-1110-4e36-a2cc-db9af9db0a0a/20153981668.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/99867621267.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_off0000f7a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A0 5364 bytes
SHA-256: fd708f8dcc84b26f06f9bbc750cae35ec50460c665be70019c879fa9def3b41a
font_01_sfnt_off000109d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D0 11908 bytes
SHA-256: c291c964d5ec122cf91e403f5428c7ad1969327d75621a9d41e33650cace7cda

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