Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e29a77acf06c32e…

MALICIOUS

PDF

74.1 KB Created: 2021-03-04 05:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d2f3c97efa29780b1dfafa6010d4b08a SHA-1: 9f9fc01db8e90369025eb2fa6e0295cb4408c930 SHA-256: 8e29a77acf06c32ebb34e0d47fe2c2083b0e68ede20f041f0611d0bf49437365
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://lozipotod.ru/123?utm_term=what+is+computer+class+9+answer PDF link annotation
    • https://kapejipe.weebly.com/uploads/1/3/1/0/131070538/sujekusavogexal.pdfIn PDF document text
    • https://lujajumivovun.weebly.com/uploads/1/3/0/7/130776132/kijosigo.pdfIn PDF document text
    • http://thestablestl.com/fagor_pressure_cooking_recipes34ujp.pdfIn PDF document text
    • http://faceit.su/tesuramelopaditatobarigzvdk.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/Hjcjhhi/super_jabber_jump_game.pdfIn PDF document text
    • https://bojuwidus.weebly.com/uploads/1/3/4/6/134698781/jilurad_dojeb_venoso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_601f9683bae30.pdfIn PDF document text
    • http://katipef.medianewsonline.com/radesejozavefoni.pdfIn PDF document text
    • http://zaxevef.getenjoyment.net/briggs_and_stratton_550ex_oil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501029/normal_603634d8c9368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_5fe84a5152da0.pdfIn PDF document text
    • https://cdn.sqhk.co/wegodimumod/hbNogj2/wonomurulelupesiwedol.pdfIn PDF document text
    • https://vopesowe.weebly.com/uploads/1/3/4/6/134638419/4217800.pdfIn PDF document text
    • http://domainlimax.xyz/lejuzolusibcniqr.pdfIn PDF document text
    • https://bunonosuvon.weebly.com/uploads/1/3/5/9/135976801/dilawefowutozukux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_602ee2404d9af.pdfIn PDF document text
    • http://creamspait.xyz/arijit_singh_all_songs_download_audio62txj.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/how_do_you_play_pairs_card_game_war.pdfIn PDF document text
    • http://sunufosabupes.scienceontheweb.net/64258143458.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE750 5436 bytes
SHA-256: 57bc899b6fed0b34f91c5e792544eb0bff203a7386ed5c5f8f3594cb8c100be5
font_01_sfnt_off0000f9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B1 9800 bytes
SHA-256: b74fe8f94964eb3f079cb79979b61a4dc257bd2ea382527ec9bc07cad42a0221

Open this report in the interactive analyzer, or submit your own file for analysis.