Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e600514cec0700…

MALICIOUS

PDF

56.0 KB Created: 2020-08-19 20:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f4b2fc13e963936d42e665ebac4e69b SHA-1: 52545a6e7d0a1bcd3a3a84e1062e84fe9ca27599 SHA-256: 96e600514cec07009461a5b2074643461e6619833f47bb864a82e548f5aa704a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one specifically pointing to a known malicious redirector. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the URL that triggers the redirector, suggesting a lure to a malicious site. The presence of multiple Shopify links, some flagged as benign and others not, indicates a link farm strategy, likely to obscure the ultimate malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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.com/pify?keyword=wto+agreement+on+rules+of+origin+pdf
    • http://files.katiemongue.com/uploads/1/3/1/3/131381605/saxudokaxazekez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/zetuwik.pdf
    • https://cdn.shopify.com/s/files/1/0437/3859/5482/files/jurnal_pengertian_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/sosuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/xitaxeka.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/tipigiforujuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3351/8489/files/extract_mp3_from_mp4.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009dfa.bin
09f0eade40b2c195ee4fe4419b1c10fab0f1bf6f0ba05c1664beceace5ca7fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFA 5372 bytes
font_01_sfnt_off0000b034.bin
b033342614c79f2871254b3c436a726e2f91d6ae81207420e1a63722f3b260a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB034 10320 bytes

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