Malicious PDF — malware analysis report

Static analysis result for SHA-256 011abd7365355dbd…

MALICIOUS

PDF

67.3 KB Created: 2020-12-20 22:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fcc87650b0807899eb9ffdf4633f0286 SHA-1: 76ed9bc5a8b0bc891d5e16b29b3cf5f1d815025d SHA-256: 011abd7365355dbdfba02fab724c555738054a6b374f09f088d3c46191c7312c
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, with one URL pointing to 'traffnew.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the structure suggests an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/123?utm_term=soft+paws+for+dogs+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405185/normal_5fbcb39fccac8.pdfIn PDF document text
    • https://xekozetona.weebly.com/uploads/1/3/4/5/134508060/zuxirusigebixot.pdfIn PDF document text
    • https://xikigojajutu.weebly.com/uploads/1/3/4/3/134385057/4844813.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/260142.pdfIn PDF document text
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/fixawufajopubovoz.pdfIn PDF document text
    • https://wuvukimepegoj.weebly.com/uploads/1/3/4/6/134694914/2005319.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://static1.squarespace.com/static/5fc1583bff13940aa242bd98/t/5fc3d1df2dd96f591862f543/1606668768500/5_components_of_management_information_system.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc781ca58762305c0f8fbfb/t/5fd655fc96ed101a3e3e5c08/1607882237675/asianet_broadband_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7362acf-1ce1-4d53-9fde-d217dd2b5b87/67579367979.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ded9579eee3ae06a23cc/t/5fca603c2dd5445090c80aeb/1607098435160/22569343763.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_off0000c04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04B 5064 bytes
SHA-256: aa59bd50c1d0200997d48a09981b569bcbcdbe8017df1b57531795597e930531
font_01_sfnt_off0000d19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19D 9688 bytes
SHA-256: 0252ce8db69fa9ce4ebe5b9b1779d77e2dc766eea45cb11f1ec85be65fb54752
font_02_sfnt_off0000f2ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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