Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8f1a7b73ccf71e…

MALICIOUS

PDF

70.3 KB Created: 2020-08-10 23:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc487804fe5ea2f7d1a248128986591e SHA-1: bc6282330953046b85d10c4e1996f95b5a7d8117 SHA-256: 6d8f1a7b73ccf71e1ebc769592823218df60b0976f964c7a1e9631e44c72c336
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/wb?keyword=stakeholder%20theory%20the%20state%20of%20the%20art%20pdf'. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the heuristic firings indicate a malicious intent to redirect the user.

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/wb?keyword=stakeholder%20theory%20the%20state%20of%20the%20art%20pdf
    • http://files.bhspantherband.com/uploads/1/3/1/4/131406149/6ee2479a138.pdf
    • http://files.iwstreecare.com/uploads/1/3/2/7/132740479/wogupu-zukokitoruwogog-zikezugufada-pubuzesilas.pdf
    • http://files.ileanaespejel.com/uploads/1/3/1/3/131380001/1136987.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/3865245864.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/leons_d_orthographe_cm1.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/anomalia_del_agua.pdf
    • https://cdn.shopify.com/s/files/1/0434/0016/7589/files/business_research_paper_format.pdf
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/ios_6._1._6_jailbreak_no_computer.pdf
    • https://cdn.shopify.com/s/files/1/0434/6881/6544/files/dinubazanutusigiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/bobcat_s590_specs.pdf
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/rutaxirovebonelugifudes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3550/0439/files/basic_life_support_training_philippines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/31320806657.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_off0000d571.bin
5f068070de57bddf0551a461b02160eb057b5585e0798d242794db7be74c3e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 5400 bytes
font_01_sfnt_off0000e7c4.bin
e15f0d02e176dc9f0f5de0683c71a558317c8009d86f7c555509ed77d976bfd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C4 10748 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.