Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f30e1f32ba839b…

MALICIOUS

PDF

71.2 KB Created: 2020-11-13 18:17:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 371b4afbdbb92b85fcbeb0137a9db040 SHA-1: d774a58fbc74a996bfde8b29fe714069c0f281e7 SHA-256: d6f30e1f32ba839b2c046f2431c1a3ea2cc845d33682403445f09cf2f874b0e1
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The document body is heavily obfuscated and appears to be junk data, suggesting the primary malicious function is driven by the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/123?utm_term=male+ballet+dancer
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f8a1cd71e961.pdf
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5f9f310304e11.pdf
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8a9693d4ba9.pdf
    • https://cdn-cms.f-static.net/uploads/4444630/normal_5faba92386782.pdf
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f8fdc6f81826.pdf
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/ledediva-tereja-benuliv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/solonebosop/69138938647.pdf
    • https://s3.amazonaws.com/saziwijaxodav/army_jrotc_uniform_standards.pdf
    • https://s3.amazonaws.com/zikeko/carer_recognition_act_2010.pdf
    • https://s3.amazonaws.com/tobobowu/menilevolusitivel.pdf
    • https://s3.amazonaws.com/muvarelo/matlab_solution_manual.pdf
    • https://s3.amazonaws.com/domegagowevag/silvercrest_espresso_machine_manual.pdf
    • https://s3.amazonaws.com/falufusu/albion_frost_mage_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c493.bin
16a0685b1af8f7ff3286410c82d065b2ef9dd16f5cc5e004aadb0dd239daad33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC493 3120 bytes
font_01_sfnt_off0000cfc6.bin
9eae7a6362c559fe3d94e3bd4bdc661ddcb51ab3934caf2ce72f304cee356768		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC6 4532 bytes
font_02_sfnt_off0000df30.bin
83afd17f65196a7506079f79292adcc4b4476b97180881ee14528a43af16daaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF30 10312 bytes
font_03_sfnt_off000101fa.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101FA 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.