Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd60615b058ba69e…

MALICIOUS

PDF

69.8 KB Created: 2021-02-24 09:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bc02bb378aa4f848c7f39f85641e11fb SHA-1: 14cdf9be9f192d2cee3171a99cc1d2ec1ed175cd SHA-256: dd60615b058ba69e15680289dac9314eb1420ed16efb3420b1aea0986aed049a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or spam distribution tactic. The ClamAV detection and ML classifier strongly indicate maliciousness. The embedded URLs, such as 'https://maypoin.ru/strik?utm_term=how+to+set+up+campark+t40+trail+camera', are likely used to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://maypoin.ru/strik?utm_term=how+to+set+up+campark+t40+trail+camera PDF link annotation
    • https://pafebexazare.weebly.com/uploads/1/3/1/1/131163914/kixubusaporitulim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382423/normal_5fc7b3a7d7cc9.pdfIn PDF document text
    • https://cdn.sqhk.co/jagibuvat/jejbeGf/maze_meaning_in_english_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/OigjTKs/my_indoor_cat_escaped_outside.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368243/normal_5fed3724a8bd2.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/6gchijV/jafosowupuk.pdfIn PDF document text
    • https://serataxufo.weebly.com/uploads/1/3/1/6/131606193/cca85c31c8575ac.pdfIn PDF document text
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/4085548.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/bovakukaral.pdfIn PDF document text
    • https://xoxomedeze.weebly.com/uploads/1/3/5/3/135308121/ab3864.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/gfIWja6/65503436214.pdfIn PDF document text
    • https://rizenuwav.weebly.com/uploads/1/3/4/3/134335920/labegaserusamin-xuwamuwuza-ravabuvidusesaz-jijopajerogosu.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/icBjgj6/best_brand_of_cowboy_boots_for_wide_feet.pdfIn PDF document text
    • https://tabajojimito.weebly.com/uploads/1/3/4/3/134317549/2334520.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/mDRAxif/jerixew.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/ggt8gc9/blue_book_for_cars_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/sawomunuj/cdgfjiQ/shattered_glass_transformers_prime.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22C 5424 bytes
SHA-256: 12324ef0158b2267e4b91bda35ec5d2990285bf1b4bb3836bf1df673793f32d8
font_01_sfnt_off0000e49f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49F 10484 bytes
SHA-256: d194cee44e1c12ced367805ee37b9a20d84b5de9cafab504ee25cd65f8b60172

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