Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe79b5588af61e2…

MALICIOUS

PDF

43.4 KB Created: 2020-09-05 03:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4e692cd1769d20a4aa89338eb80b61b SHA-1: 296835f2e224d3e1c97f2079a8acf15a0a92c7f1 SHA-256: 8fe79b5588af61e2b22bc53f02bd9968e2010dee01f0d981112d45d51c892402
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=raees+full+movie+hd++filmywap+2017'. This URL is presented within the document body, disguised as a movie download link. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to static.usrfiles.com. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be luring the user to click the malicious link, likely leading to a phishing or malware distribution site.

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=raees+full+movie+hd++filmywap+2017
    • https://static.usrfiles.com/ugd/1e4819_fa90332a9c4d4052add8c97a37609e99.pdf
    • https://static.usrfiles.com/ugd/0b46e6_e9cc95b664264517b45ac93e745380c0.pdf
    • https://static.usrfiles.com/ugd/9f69bd_77a18584e93e4c83ad08001760842054.pdf
    • https://static.usrfiles.com/ugd/c1108c_9e40a14e04d543909d1f2a32805f3f9c.pdf
    • https://cdn.shopify.com/s/files/1/0433/2155/7150/files/pojuzimexobuxa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5238/3902/files/birthday_cake_name_edit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/bujojomefojaga.pdf
    • https://cdn.shopify.com/s/files/1/0435/7400/1825/files/boiling_point_elevation_worksheet.pdf
    • https://static.usrfiles.com/ugd/7b00a0_55c37ef8bbfc421e97465b22ead3b23e.pdf
    • https://static.usrfiles.com/ugd/aec2ea_f7d52629c6e44b9ca66845add78ec355.pdf
    • https://static.usrfiles.com/ugd/33ab24_5e8adc5f8ead40eb862786691c26ed49.pdf
    • https://static.usrfiles.com/ugd/b8c837_424d2e06a9b944198bb36cef0e58beaf.pdf
    • https://static.usrfiles.com/ugd/ca300b_066206880bef47048b436fbdfd711c24.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_off000067a4.bin
2dcb21782b5e1902c3ddac749e0271b9d429440748742817458d2979291f5a5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A4 5852 bytes
font_01_sfnt_off00007b9c.bin
9cc5358ff43ad1d5bfaa3a5d77f0bae496403fc77796181a2fd0fbdced3fabe9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 11000 bytes