Malicious PDF — malware analysis report

Static analysis result for SHA-256 3645145db9525694…

MALICIOUS

PDF

33.7 KB Created: 2020-09-02 04:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c20daef9058fa29d41f4716c3395112 SHA-1: 7f8aa0d6640c132faadf1836a0bc690759a81bf5 SHA-256: 3645145db95256940e5c00a459f978468f5561fb54f5c14ae059a612e8f25821
154 Risk Score

Malware Insights

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

This PDF file contains embedded links, one of which, 'https://ttraff.me/wix?keyword=arjun+reddy+movie+tamil+audio+track', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to reference the movie 'Arjun Reddy' and includes this URL, suggesting a lure to drive traffic to malicious infrastructure. The ML classifier strongly indicates maliciousness, and the PDF structure is consistent with link farms designed for SEO poisoning or 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=arjun+reddy+movie+tamil+audio+track
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/35959935815.pdf
    • https://cdn.shopify.com/s/files/1/0431/1656/0550/files/mazimiraxepafavug.pdf
    • https://cdn.shopify.com/s/files/1/0446/8106/8697/files/87024304176.pdf
    • https://static.usrfiles.com/ugd/a01749_2cfc7c70e9b1430cb0cdc1679bc9fedd.pdf
    • https://static.usrfiles.com/ugd/b8c837_2df67ebf33d145a4a7d7626fcc6d1c51.pdf
    • https://static.usrfiles.com/ugd/3801ff_99a8450c8ab24695bee8a1c3aafc9e95.pdf
    • https://static.usrfiles.com/ugd/6846fe_1f0dab1984e64584bf4543af362faed3.pdf
    • https://static.usrfiles.com/ugd/e02969_8a41b1137c87493ab9fe253527fcbb0b.pdf
    • https://static.usrfiles.com/ugd/33ab24_fa13f23cf059489aa3bedaeb8b5838e6.pdf
    • https://static.usrfiles.com/ugd/5c7528_5b72431759764eb3ae655d68625d7b7a.pdf
    • https://static.usrfiles.com/ugd/0c268c_9e1e090333b24e5caeb768ad13cd104d.pdf
    • https://cdn.shopify.com/s/files/1/0433/6677/6991/files/lightning_salesforce.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufowotipopugisafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1196/files/zegilufiweridopofor.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004620.bin
dc5c0d89ee3624fb21e7a894d410c1b00dbca0523d94312f6742a7f20f7df821
pdf-font-stream PDF embedded font (sfnt) at offset 0x4620 5200 bytes
font_01_sfnt_off000057c9.bin
6af3e674174e3c8cff063ed72b73c2b2e4bf1380237aa6b1e92606f9fd3ccd58
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 9980 bytes