Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a699e86dbacf44f…

MALICIOUS

PDF

44.6 KB Created: 2020-08-31 09:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5375bc4fc3a914a3314c44d99485b16 SHA-1: 22efde42bc71be21e827d7890b638a8a74bc5c5e SHA-256: 1a699e86dbacf44f63e46abb39116575cbe77341a98d9cee80cc0282e0b715ba
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=wsex.esm+new+vegas'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, but the primary redirector is flagged as malicious. The ML classifier also strongly indicates maliciousness. The document body contains obfuscated text and the malicious URL, suggesting an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=wsex.esm+new+vegas
    • https://cdn.shopify.com/s/files/1/0438/8320/0680/files/trusting_god_in_hard_times.pdf
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/assassin_s_creed_identity_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0465/9023/0693/files/ardaas_karaan_full_movie_djpunjab.pdf
    • https://cdn.shopify.com/s/files/1/0438/3752/2085/files/openstax_physics.pdf
    • https://cdn.shopify.com/s/files/1/0439/0086/2619/files/80186456734.pdf
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/hall_of_fame_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/vanolas.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7e4032911c447a1b1c289acb84cc05b.pdf
    • https://static.usrfiles.com/ugd/913720_25df58d16d5443979947f03d04c34563.pdf
    • https://static.usrfiles.com/ugd/b8c837_efd35249ba134561b3e8a6ddc2c84531.pdf
    • https://static.usrfiles.com/ugd/3bf302_b60ec6c630364fe7b0402d300ecf420f.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_066ebb44dcf74254a90644c0bc1dfb14.pdf
    • https://static.usrfiles.com/ugd/a4e402_2cbd73e9e8424c57a2a54be0530cf636.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0ce4da3a354f04baf23d742bfe07a9.pdf
    • https://static.usrfiles.com/ugd/906e9f_cd644d2f108e4d2996fc3f73362f52a5.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005afa.bin
9c8b18c86da0de6fd4e78cdc15cf1352fb9e3a313e5dc02f7f480f81ec49865c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 4692 bytes
font_01_sfnt_off00006ae1.bin
9097b9e518d6be9d11f6ace8b3d46be424cbac1078d425ab0dc589af6fb4accd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE1 14496 bytes
font_02_sfnt_off00009789.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x9789 4324 bytes