Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa179f2748b8a44…

MALICIOUS

PDF

49.2 KB Created: 2020-08-30 21:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d5f33d464fd8c97494f2062031c4d8e SHA-1: a2b9cf9be483842f0199170e806269b6e0c79d2d SHA-256: baa179f2748b8a448f7831bbe5de66e0fa549933748b82725cc0f9cc2969b262
152 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a "Toyota camry owners manual 2003". The link, https://ttraff.cc/wix?keyword=toyota+camry+owners+manual+2003, is flagged as malicious and leads to further redirector infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify and static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness.

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.cc/wix?keyword=toyota+camry+owners+manual+2003
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/lejanezigepunazefi.pdf
    • https://cdn.shopify.com/s/files/1/0447/3644/6613/files/dodge_transmission_interchange_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7335/files/driver_booster_4.5_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/67455498047.pdf
    • https://static.usrfiles.com/ugd/89064d_92d6bd36d3da4249ad6a2130f45480e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_39f7dbe0cd854a7083df6d2543a5a8f0.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_a43dd87b552d4f57b0ee61a1ebcbc9db.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5df11c53f3d4faba3d9b4c8ef134d20.pdf
    • https://static.usrfiles.com/ugd/40512e_aea1bd7db3e24893b118d054300c6b7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e0d82353fcf42f18595ed52e8a2d523.pdf
    • https://static.usrfiles.com/ugd/c0b427_3517e58bbb1a481fab4126e3ab2590fb.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/makapezego.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/26042659690.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_off0000745e.bin
34e262131f31e5e78f98c224cadaa8351b5d7d68ddcd7b5a0408edda937d126f
pdf-font-stream PDF embedded font (sfnt) at offset 0x745E 5360 bytes
font_01_sfnt_off00008692.bin
4de71e5d748d77a7f0933e3b595efa2a09638203ce19f098490d38a4411f250c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8692 10208 bytes
font_02_sfnt_off0000a977.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA977 4324 bytes