Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01029dd7d5c142f…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 08:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2124773c02593a0f1c3b8a25e8638b40 SHA-1: efca5de5f676a58ab6d2ab647b98e3fe74ae9f98 SHA-256: d01029dd7d5c142fa8c3e5058000c4681fcea71e672c747d4ca74fb53cdf90fc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'plantilla excel inventario bodega' and the malicious URL, suggesting a lure to a fake template site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, further supporting the malicious intent of redirecting users to potentially harmful content.

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.com/wix?keyword=plantilla+excel+inventario+bodega
    • https://static.usrfiles.com/ugd/ef7b09_544e612cb0044a92aee253c346b95b28.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa28568802844c82bf3acaf25de470f5.pdf
    • https://static.usrfiles.com/ugd/f55bec_e91a183338b140038cd706056eecd846.pdf
    • https://static.usrfiles.com/ugd/5926b4_66021b7ea103457ebfdad37d09074ded.pdf
    • https://static.usrfiles.com/ugd/b6edda_6f6413da1e654b53b85f3e636fe886f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc105667636b409cac439df943fa0c99.pdf
    • https://static.usrfiles.com/ugd/22739b_dea4f6dfc86b47948173003046f60680.pdf
    • https://static.usrfiles.com/ugd/469aea_71de3877fe5040178aadbb9cf1899be7.pdf
    • https://cdn.shopify.com/s/files/1/0440/4923/6118/files/define_approbation_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/2623/4009/files/oceans_chords_bm.pdf
    • https://static.usrfiles.com/ugd/e5412a_c5bb67368c984cad957a908840d31949.pdf
    • https://static.usrfiles.com/ugd/b42fd6_95383178aaff4eeda73904c50cf983ee.pdf
    • https://static.usrfiles.com/ugd/9904c2_793804c0d7804f1b8f63c25b746e6598.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_off00005e2a.bin
0394ba1dd610840ad492a2e5e768784357812dea05ed8167241bb615a9fc9d98
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2A 5196 bytes
font_01_sfnt_off00006fd8.bin
3560fe5a2a1df36c1fb5777e6b483b7f183c976ab394fd2a8d5bd4f051479ab6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD8 4276 bytes
font_02_sfnt_off00007ba3.bin
089c5bbf6b4534643ad26a02c21f0980eb8c90a9f6abcbd7498c429e23ac37e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA3 11192 bytes