Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad30dc9ba1f220ad…

MALICIOUS

PDF

79.0 KB Created: 2021-01-09 20:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6d73ec5ea90d4da919134ab470064d1d SHA-1: 15d1196b11a8a6df5ce28fdd2e988b1bbb4a5602 SHA-256: ad30dc9ba1f220add7fa23c13b0a00ad46151df27f0f340383adad7061b7431a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm with numerous external URLs, suggesting an attempt to redirect users to malicious sites. The document body, though obfuscated, contains metadata related to 'Sons of Anarchy table read' and the authoring application, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/123?utm_term=sons+of+anarchy+table+read PDF link annotation
    • https://site-1168163.mozfiles.com/files/1168163/tumblr_drawings_trippy.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/gLntjc2/muwonijedojixiwumegomazu.pdfIn PDF document text
    • https://nusokusin.weebly.com/uploads/1/3/4/3/134350978/babc2a93.pdfIn PDF document text
    • https://jubozofarubowi.weebly.com/uploads/1/3/4/0/134095851/beguporawo-raxevamujam-pewuvu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5fa1629bd4599.pdfIn PDF document text
    • https://lokizidaputanex.weebly.com/uploads/1/3/2/6/132680869/b3e5e7ffec5b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_5fb910c777a4c.pdfIn PDF document text
    • https://kivofijola.weebly.com/uploads/1/3/4/3/134309380/xodobogo-napisajufujis.pdfIn PDF document text
    • https://zewemoledomuro.weebly.com/uploads/1/3/4/7/134746436/8802508.pdfIn PDF document text
    • https://pusixeraz.weebly.com/uploads/1/3/2/6/132681440/kaponivakilux-zijigosa.pdfIn PDF document text
    • https://zesijijonade.weebly.com/uploads/1/3/0/7/130776416/0e6221be4f7258.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/chemguide_standard_electrode_potential.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 5456 bytes
SHA-256: 141213de5b3c5cb915568d51a3ac4e07fa4dd311c4d594ee37437e0dd504a2c8
font_01_sfnt_off0001085d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085D 11472 bytes
SHA-256: 296f14cae23606e09042497e20f498b56e057f54d49bb342d9072b46967661cd

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