Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e15b9e7aa13fed8…

MALICIOUS

PDF

68.3 KB Created: 2021-02-21 01:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0c1db378f5817431fd2f59631dd7c968 SHA-1: c1d40472159c16fb5bcfdf6690995d1dd40150b6 SHA-256: 1e15b9e7aa13fed870fc51b2958491c6cef8bad8a0ad9a700c3a50aa140bef25
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

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://maypoin.ru/strik?utm_term=ktm+690+duke+owner%2527s+manual PDF link annotation
    • http://lnstagram-helps-contact.com/juneponanagojafuvodepuc5n1.pdfIn PDF document text
    • http://iclod.tech/vobujesevarobotifapogav1qdm.pdfIn PDF document text
    • https://tewonubipudi.weebly.com/uploads/1/3/6/0/136016370/d54873ba5edcf1c.pdfIn PDF document text
    • https://cdn.sqhk.co/duwafutozi/jjgeie8/homeschool_curriculum_fair_california.pdfIn PDF document text
    • https://befawiboper.weebly.com/uploads/1/3/5/3/135389238/viduravez-gasizivo.pdfIn PDF document text
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/tilaten.pdfIn PDF document text
    • http://gonzo-3d.com/62127409935343b3.pdfIn PDF document text
    • http://shimano-stradic.ru/reporter_jobs_nycblztc.pdfIn PDF document text
    • http://biomanua.website/legadoranirhzyl7.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/gcG2mhg/default_music_player_android.pdfIn PDF document text
    • http://prolac.ru/dukilopajatyhuz.pdfIn PDF document text
    • http://alisabor.design/vygotsky_theory_of_cognitive_developo2hhv.pdfIn PDF document text
    • https://cdn.sqhk.co/woviwefi/jvgetia/jiratal.pdfIn PDF document text
    • http://doorstepcomputers.com/amor_del_alma_vicente_fernandez1rzx5.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/xgfijhi/bikini_fitness_workout_plan.pdfIn PDF document text
    • https://vojawafi.weebly.com/uploads/1/3/1/6/131636668/feralunovu_bofizu_wasomi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wupuxus/daily_guidepost_devotional_for_today.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/electronic_circuit_simulation_software_for_android.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

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_off0000be23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE23 5416 bytes
SHA-256: ae3d6a894461ce3720714d5164105250ba18dc06f55c415f9a70397cfa1df639
font_01_sfnt_off0000d07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07F 11384 bytes
SHA-256: 5e54b6404b32b6ded03776f4657029f5e6d5a027ba16ea51137a77694f0d678f
font_02_sfnt_off0000f54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54A 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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