Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d6ed5a999315f1…

MALICIOUS

PDF

39.5 KB Created: 2020-09-17 16:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d63d91d9efd9d7c2936cfad1144c0708 SHA-1: b9479aca185f1c6caeb146c1824be32be6e7c3aa SHA-256: 40d6ed5a999315f1dd470413c95cd8b8f8889ae51b894835f40828496437f198
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the same URL and keywords suggesting a phishing or scam attempt. The presence of a large number of embedded links, many pointing to external PDFs, further supports the classification as a link farm, a common tactic for SEO poisoning and traffic redirection.

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.me/wix?keyword=whirlpool+quiet+partner+iii+parts
    • https://e86cce58-9f14-43a0-a9dd-0ffb0ec50e7e.filesusr.com/ugd/a13bc2_cb76cba35143453889445f7b1d6a5044.pdf?index=true
    • https://fb897812-358a-4dbf-a7b0-93fc3a67eeac.filesusr.com/ugd/917232_a5257ace88cd4433b77cbab84057db84.pdf?index=true
    • https://e2bd0e7e-b18e-4483-9837-6ef3dc0d5540.filesusr.com/ugd/5b5da7_73e232382a734eb2a6e502ccfa664b43.pdf?index=true
    • https://77b5f2d6-aed7-4152-88ec-cd44ace5630e.filesusr.com/ugd/3e7897_c314031c8e574dc99400c77bfd5b345b.pdf?index=true
    • https://2894a640-40da-4ca4-82ee-096587b021d4.filesusr.com/ugd/2f7489_7889e227ffea454caef9ef76acfddbe9.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/64564401967.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/saxon_algebra_1_2_online_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/literature_review_on_bidirectional_visitor_counter.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/im_missing_you.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/9941535852.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/accp_guidelines_for_dvt.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/dazagaxukakavomuxef.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/
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/saxon_alg

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f17.bin
9526568a691b37d504d5791e9dd19338593b33a991379b26c9244641f4aa1140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F17 4928 bytes
font_01_sfnt_off00005fd8.bin
5862c9f3837304c4b4d9ca9d9fd2adf37b61088d4fa4ab1ab57ece821e2c111c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 10176 bytes
font_02_sfnt_off000082b3.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B3 4324 bytes

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