Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a3c04736052254…

MALICIOUS

PDF

45.2 KB Created: 2020-08-21 14:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d97eabeee3144d52b0fa9e2ceba5dd60 SHA-1: 604c4c8daa2baaf580f1227468eb7fc1e2f96303 SHA-256: 06a3c047360522546b4ebf021747327d5fc19fb4c402d62cd2264b3b13c001f0
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=cabotagem+no+brasil+pdf', suggesting the document's primary purpose is to redirect users to malicious infrastructure. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a phishing or malware distribution vector.

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=cabotagem+no+brasil+pdf
    • http://files.alliancemasonryrestoration.com/uploads/1/3/1/1/131163733/1405122.pdf
    • http://files.treeofoil.com/uploads/1/3/2/3/132302764/faduj-zekumenad-gekudatesus.pdf
    • http://pokikip.jorn.com/uploads/1/3/1/8/131856380/207490.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/blowback_rubber_band_gun_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/zogobubexinajew.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/ketumatikoxoboxojavupuzix.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7404/files/pupanizosopixopadomupugov.pdf
    • https://cdn.shopify.com/s/files/1/0432/4530/6011/files/kawamonuki.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/collision_reporting_centre_lindsay_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/28737950354.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/installment_payment_agreement_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/noduruxujuxepupos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2324/files/learn_binary_code_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1989/files/building_community_capacity_for_tourism_development.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_off00006561.bin
51554bb4d476c6eaeb61c30ec0545b6397332fa8663f1ae77b9299d422fe4bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 5312 bytes
font_01_sfnt_off0000774f.bin
0e9646bbafcfc4f849790738ea194a432bd6e365e149e1c72ba027ca28f2f475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774F 10288 bytes
font_02_sfnt_off00009a3b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3B 4324 bytes

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