Malicious PDF — malware analysis report

Static analysis result for SHA-256 3102f44798a83eea…

MALICIOUS

PDF

45.0 KB Created: 2020-09-12 15:14:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d77a4f4e244b35c68180163d0f0e807 SHA-1: fa475a193c41dd91b7df3d147cde876f69a4f5d8 SHA-256: 3102f44798a83eeabd1db960344a3abea5c3356c2351ff6498ade769cf99d8ee
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.club/wix?keyword=mangalore+tourism+guide, which likely leads to a malicious payload or phishing page. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify URLs, suggesting a lure to disguise the malicious intent. The ML classifier strongly flagged this PDF as malicious.

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.club/wix?keyword=mangalore+tourism+guide
    • http://files.betterbodiesgympattaya.com/uploads/1/3/2/7/132712000/3189762.pdf
    • http://files.anagnjatovic.com/uploads/1/3/1/4/131438468/b3ca599.pdf
    • http://files.jennysbakery.com/uploads/1/3/2/6/132681812/6d56a7.pdf
    • http://fapegafog.markchristophergarrett.com/uploads/1/3/2/7/132710634/32c7360b7f8593.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/biodata_sample_format.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7477/files/51245023479.pdf
    • https://cdn.shopify.com/s/files/1/0433/9829/9813/files/74482547339.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/76284883123.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/warehouse_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0429/2876/7143/files/chuyn_sang_nh_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/origin_not_detecting_installed_games.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006648.bin
13b19467d47dba42c7ba70b72446b0a85b8873bf085edd916e8a0223be988ab5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 5032 bytes
font_01_sfnt_off00007748.bin
f0c4a016d8c22f9b61cdc9cfbeb36cd7782b13bf272d6ec23098b24f54882ef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7748 9908 bytes
font_02_sfnt_off00009951.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9951 4324 bytes