Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeae10633d691477…

MALICIOUS

PDF

71.7 KB Created: 2020-11-11 14:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 291676e47d89897659e28e8e16430126 SHA-1: 9e2f021e1e14b6d891e876654cb2a2f5bff4d756 SHA-256: aeae10633d69147726c635d1a2e1663bc95f04564219f35f5ba21e930e4197d9
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 numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary URL, 'https://traffking.ru/aws?utm_term=solange+when+i+get+home+download', is likely intended to redirect users to malicious content or a phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://traffking.ru/aws?utm_term=solange+when+i+get+home+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f9d80ae23418.pdfIn PDF document text
    • https://zuzuxaze.weebly.com/uploads/1/3/4/0/134040629/19df205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470020/normal_5faba5cd5a86c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393186/normal_5f91a04805ff8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368984/normal_5f8c4eda50a1d.pdfIn PDF document text
    • https://bulipabuwalo.weebly.com/uploads/1/3/4/1/134131868/6438177.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387810/normal_5f97858e1d246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_5f91e16971b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5fa2116a1e97d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8bb2d73c2b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5fa6b9dda9840.pdfIn PDF document text
    • https://dubanivexog.weebly.com/uploads/1/3/4/3/134331992/goxezaxurupajonifafe.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/7378201.pdfIn PDF document text
    • https://xawiwewediwo.weebly.com/uploads/1/3/4/0/134017039/9236152.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/7863770.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/vapite/70249763720.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC00 4948 bytes
SHA-256: 6acfd59073f2bc273578b4f36c3d0cf8fbf057b35cfe5f5d1b6749e818e8b381
font_01_sfnt_off0000dcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAE 11620 bytes
SHA-256: 8a35713e459c3ddf9abfa4c42eaa5db18c1b4f52ab433d8182cc9fb938f8d0af
font_02_sfnt_off00010340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10340 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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