PDF malware analysis — malicious · 71d56a4e98b4e26d

MALICIOUS

PDF

85.6 KB Created: 2021-01-01 14:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: dbd8ddb3663f124b5f669eddbff07c98 SHA-1: 89d7461eb2ce1d5ad06cbbd9d7b879670bdfca78 SHA-256: 71d56a4e98b4e26d152167410b891d60b2c5c8649268f4dce2273ec162f90c9e

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics and a machine learning classifier, indicating it hosts a link farm designed to redirect users to potentially harmful sites. The embedded links, such as 'https://traffmen.ru/strik?utm_term=windranger+arcana+dota+2+mod', are part of a strategy to obscure the true destination and likely serve as a lure for phishing or malware delivery. The presence of numerous links on disposable hosting further supports the malicious intent.

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://traffmen.ru/strik?utm_term=windranger+arcana+dota+2+mod In PDF document text
- https://lalovetesosa.weebly.com/uploads/1/3/4/7/134728341/8a615e57.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367937/normal_5fd2dfce1fcd3.pdfIn PDF document text
- https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/1695228.pdfIn PDF document text
- https://zapodebas.weebly.com/uploads/1/3/1/4/131437158/8765f8.pdfIn PDF document text
- https://pefikasulanak.weebly.com/uploads/1/3/4/3/134350375/nolopumazutali.pdfIn PDF document text
- https://vafopizinenited.weebly.com/uploads/1/3/4/4/134480139/matusepowabawufazup.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4499299/normal_5fdd29cdf087d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411480/normal_5fac40f221e78.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410216/normal_5feb9c43cc57d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390643/normal_5f8e6df11fa84.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/86e11ae4-f308-42f3-9dca-dcfa920f8791/74654409355.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b7049455-5130-432b-b51b-4897cf942caf/dune_buggy_cartoon_name.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83d461a8-fac1-4b7f-97a5-f25388a0eacd/ledger_line_practice_worksheets.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c61f6280-9eab-43b1-8cac-83f8369551ad/dbz_legacy_of_goku_2_cheat_codes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7f085e84-8575-4d85-9aae-8972fe17f057/dedas.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_005_off0001233f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1233F	21592 bytes
SHA-256: `075bb0973228c5b89e74d577b6d1ffef6dc05ac2f5e13ff14b24d13cc7178910`
`font_00_sfnt_off0000ebb0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBB0	5192 bytes
SHA-256: `7eafd7c4863fb750e553074495c3f0e8cbeeae691b135dccc7d1732d64625907`
`font_01_sfnt_off0000fd55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD55	11036 bytes
SHA-256: `d1916b517fdcd2668d85eea1a7f8c130ef2ddb48189e3d4836976e06c709d3b0`

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