Malicious PDF — malware analysis report

Static analysis result for SHA-256 7241493d7499ac1e…

MALICIOUS

PDF

42.3 KB Created: 2020-08-01 01:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332250b7b75ff467bb5a2e9bf9fc28dd SHA-1: 0533b5813cc3f5b1557d766f8e7288f18e789664 SHA-256: 7241493d7499ac1ee12c315d5e8bf691007eb21094b18bfbc63bc6c226a75e84
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common tactic for distributing malware or phishing pages. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=igt+slot+machine+manual+pdf', suggesting a lure related to slot machine manuals. The heuristic 'PDF_SEO_LINK_FARM' indicates the PDF is part of a larger link farm, likely for SEO manipulation or distributing malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=igt+slot+machine+manual+pdf
    • http://files.bensonmarshall.com/uploads/1/3/0/9/130969204/5090ef399335.pdf
    • http://files.esoterichealing.com/uploads/1/3/0/9/130969790/9baa326593813b3.pdf
    • http://files.lindalgraham.com/uploads/1/3/1/4/131455283/7d86161771d526.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/xadijok.pdf
    • https://cdn.shopify.com/s/files/1/0441/1061/0584/files/zolarikaze.pdf
    • https://cdn.shopify.com/s/files/1/0435/8956/6623/files/5541523555.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2440/files/rovemagedisodojipuvadexin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/sexanik.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/59688707713.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/forge_for_1._14.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/welelobasotexutawato.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/lakonesugokonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/xefojaboxagumajoxalob.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/xelurupajimarituvotojo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/pasogaxew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059e7.bin
52ebf76889f49fbf16caa10d4f3ac9a5c54cd6f719cb04aa376d1072d9eff541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E7 5292 bytes
font_01_sfnt_off00006bc3.bin
9633083db591a6c7dd4e269f41ba5bf3bc5c4d16f42dddc66237704007ba95f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC3 10052 bytes
font_02_sfnt_off00008e25.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E25 4324 bytes

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