Malicious PDF — malware analysis report

Static analysis result for SHA-256 67538a160933307e…

MALICIOUS

PDF

51.7 KB Created: 2020-07-30 03:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28365e736b6618dd4e23853ef8616481 SHA-1: 39fcb750d046bd76c9a3b54098786d63f69162a1 SHA-256: 67538a160933307e54df3e5cc128202e3bb595d1a530bbf3e1aa14b6f4b0d3cf
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically identifying it as a malicious redirector pointing to 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to 'Amway products catalogue pdf 2020'. The ML classifier strongly indicates maliciousness, and the presence of many external links suggests an attempt to drive traffic to potentially harmful sites.

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.cc/pify?keyword=amway+products+catalogue+pdf+2020
    • http://files.blindinggray.com/uploads/1/3/1/4/131407138/f2c988d2.pdf
    • http://files.transformation4you.com/uploads/1/3/1/3/131380985/viwetowaperi_runixen.pdf
    • http://files.tinykidzofparadiseca.com/uploads/1/3/0/9/130969768/wozunitanitegurat.pdf
    • http://files.diabetesrelatedretinopathy.org/uploads/1/3/0/7/130776152/e619931c06c.pdf
    • http://files.photographsbycarolmccullough.com/uploads/1/3/1/4/131452883/femeriwujo-vozukubupoba.pdf
    • https://amway-site.ru/products/gubka-dlya-obuvi
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/fubow.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/jovoxugadobu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/falufulozevawiduxiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/87619625862.pdf
    • https://cdn.shopify.com/s/files/1/0437/1644/4311/files/13406038400.pdf
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/47980738971.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/51355364350.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/jamamoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/polonafebomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/bifajojetedoxiteran.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/rofirolefefunezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdf
    • https://cdn.shopify.com/s/files/1/0434/3467/2285/files/36942679808.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51098187394.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000888e.bin
29c40c00f71ad09002d0d2fdb76dc64d88e27d5a45d46bb3424268af28b3897f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 5660 bytes
font_01_sfnt_off00009bef.bin
68f5b5540f06c2235af45d103c8b55254d840ca7411bc51d3078e9b12732d712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEF 10960 bytes

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