Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c47d44b376133c0…

MALICIOUS

PDF

42.2 KB Created: 2020-09-21 01:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 733b4b57d8ad213b7dba5ade1d2cf641 SHA-1: 4de18c3274eaa1c3a401fe359e510233805e5f47 SHA-256: 6c47d44b376133c0bd652bb0ce5a005c56e23c239973d2b31bd5f9f28c8db11a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One prominent URL, 'https://ttraff.ru/wix?keyword=subway+surfers+unlimited+coins+and+keys+apk+kickass+download+hack', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to software downloads, suggesting a lure to trick users into visiting these malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/wix?keyword=subway+surfers+unlimited+coins+and+keys+apk+kickass+download+hack In PDF document text
    • http://kexeba.ajspinksfilmmaker.com/uploads/1/3/0/7/130739663/2060758.pdfIn PDF document text
    • http://files.blissofne.com/uploads/1/3/1/4/131437005/36dbb8138a4.pdfIn PDF document text
    • http://kiwegu.jacquelinejanas.com/uploads/1/3/0/8/130813528/e33c1.pdfIn PDF document text
    • http://files.aroundthepros.com/uploads/1/3/1/4/131454733/a491eef9a0b02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5a364793-5cfc-46b8-b862-0b897ca70eb7.filesusr.com/ugd/253000_58484d372d9b4f6a99bd7a4efc58c7c8.pdf?index=trueIn PDF document text
    • https://b5e9479a-0a6b-4cf2-8581-2ecca80c2c1a.filesusr.com/ugd/d7ba0f_a788cc1e9d7f451ab874e6a13b7950c1.pdf?index=trueIn PDF document text
    • https://b9edefcc-da3e-4c60-af20-aab204bab171.filesusr.com/ugd/21e6f2_d2cb68d524d34a5ca618e0c5010905cc.pdf?index=trueIn PDF document text
    • https://d8724b2c-6c77-4108-bbf5-a1828b78ba6e.filesusr.com/ugd/409ca8_c257f23713df4cf68161e74438ad608d.pdf?index=trueIn PDF document text
    • https://d6c0e543-6755-4178-bff8-1e92d40f51c9.filesusr.com/ugd/65e777_e9ac558b36234a5387ec7f947b1ec986.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/airships_conquer_the_skies_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7292/8409/files/4752857413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/gupukusujapilitomebal.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_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 5896 bytes
SHA-256: f90ba5924d149e54168b34658f081d1bd4c471a4b0030318e8bed4af44ce9378
font_01_sfnt_off000076e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 10640 bytes
SHA-256: 63e93ce2a0ae75f92094fc6d6a371834fd879242386eaf3cd07d0819bc0972b3

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