Malicious PDF — malware analysis report

Static analysis result for SHA-256 a265c835d512384b…

MALICIOUS

PDF

91.0 KB Created: 2020-12-01 02:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 088b6c098c86a977b40bd1c980d91a69 SHA-1: 77738a46d984b946169d7f7d816f1486b34892ae SHA-256: a265c835d512384bee040dd0a6724b1bd8f694062daebd75a7770d474bfcd714
134 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a potential phishing lure due to its domain and UTM parameters. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the presence of a link farm and urgency lures suggests an attempt to trick the user into visiting a malicious site.

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffset.ru/strik?utm_term=usps+consumer+affairs+los+angeles
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/4495063.pdf
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5fbbc1eb12fd6.pdf
    • https://ponejibuwefugep.weebly.com/uploads/1/3/4/8/134879986/koxarofizesubugib.pdf
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5fbc80ad7ca6d.pdf
    • https://fobolobal.weebly.com/uploads/1/3/4/3/134317950/disonuvi.pdf
    • https://rogefiraf.weebly.com/uploads/1/3/4/5/134581109/65b58.pdf
    • https://cdn-cms.f-static.net/uploads/4404107/normal_5f9655dfcaecf.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/6258688.pdf
    • https://cdn-cms.f-static.net/uploads/4380545/normal_5f8afe13a2a74.pdf
    • https://ginefudev.weebly.com/uploads/1/3/4/4/134454890/zipazuroxetef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0ba6ac89e1c4b8fbd7cfc/t/5fc103d318e72e5fdbfb4909/1606484953947/ethical_issues_in_modern_medicine.pdf
    • https://static1.squarespace.com/static/5fc0ed17f7cf8c75402b0ccf/t/5fc440944e98326c0298beeb/1606697109381/peoria_notre_dame_directory.pdf
    • https://s3.amazonaws.com/likadojivivofu/dead_beautiful_series_review.pdf
    • https://s3.amazonaws.com/bidivo/99393181027.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125a6.bin
f0a86bed5dbb2c7e140f13c038f8a630d9a2c37bb3332dc7d31f2e35a274af0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125A6 5324 bytes
font_01_sfnt_off000137b3.bin
8e88f4f0a07365742b78b1404d0331d078810b9943672e9c153ee10a0a847e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137B3 11552 bytes

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