Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc5f54db1571487…

MALICIOUS

PDF

43.4 KB Created: 2020-09-17 07:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd4a6a372787dabe2df5e4916cf7c4a2 SHA-1: ad699c46460d8f7575746f036d3f49de0f0711ee SHA-256: 5cc5f54db15714873708399d06fcc3d519a665bbbe7b1d16bf48b5b6af181f83
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection scheme. One prominent URL, 'https://ttraff.club/wix?keyword=pathfinder+rogue+archetypes+guide', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to lure users to malicious infrastructure. No scripts were extracted, but the presence of numerous links and the identified malicious redirector strongly suggest a phishing or redirection attack.

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=pathfinder+rogue+archetypes+guide
    • http://lefupel.mindsets.net/uploads/1/3/1/1/131164572/5961620.pdf
    • http://files.deardahlia.net/uploads/1/3/2/6/132683000/c446f.pdf
    • http://files.kauaicleaningdoneright.com/uploads/1/3/1/3/131380175/608e942.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://6dc10773-6666-4a86-9913-9c5df28304ef.filesusr.com/ugd/b73feb_75f566bc86f64f9abe70178feb625855.pdf?index=true
    • https://3ddc75f8-9164-410a-82ea-c41af1408c1f.filesusr.com/ugd/99b222_cfdb4b1ff7ff4e439aecb2a666899bb3.pdf?index=true
    • https://c5312167-c29c-4a8a-8e1a-409a66652684.filesusr.com/ugd/f6336d_e42daf32eb504dc4b3198665efea0599.pdf?index=true
    • https://3040d92a-bc51-44ff-8e5d-cf35ac54c3ac.filesusr.com/ugd/694d5d_4575e9ff92bd4c4ab6d0d222b7993699.pdf?index=true
    • https://cf576c42-d3c1-4f23-bd32-6f451960714b.filesusr.com/ugd/cb2bed_9f82c92d734a4d0d8ae76b2a2481647e.pdf?index=true
    • https://9aafabfd-18c5-4df7-83d6-40dccacbe7f6.filesusr.com/ugd/eb4c03_afda0dcd74c14599b5e4e66aeed6bc8b.pdf?index=true
    • https://8f2aa2e6-cf18-4d1f-acb6-7694e9760d89.filesusr.com/ugd/e481ce_2405d8bc600c4004b5c96e18d508ebfc.pdf?index=true
    • https://fadfe69d-6ce8-44d8-9d02-8abbc333281a.filesusr.com/ugd/8ce377_757eb832848048c5a6bbd1a39b990ace.pdf?index=true
    • https://045f94d4-6fda-4d10-b383-a8cb68c77acc.filesusr.com/ugd/9f6a24_4c7c42fd77f14059ab3136c2a6a089f2.pdf?index=true
    • 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_off00006be0.bin
5911724d1cc91609d0eec01099b4f7cce20d797dab9a95a659d2d75f9d39c04a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE0 5488 bytes
font_01_sfnt_off00007e97.bin
1c1b4f7cdea5d84af25ced66134be730f3ca15dffedc0aac6d2ecfeb4c202610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E97 10028 bytes

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