Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2d0364013d0f43…

MALICIOUS

PDF

42.2 KB Created: 2020-09-17 12:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd402d0052f3126e33900712a1fd1ccc SHA-1: f768181ae15c28b53eede2ad2c07b0952ed64e2b SHA-256: 1a2d0364013d0f43af21114031171eb1b17ce21af300ecdfea642a4ade99b171
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to host further malicious content or phishing pages. The document body text, though partially garbled, contains the phrase 'Sunset mortgage company lp', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of embedded links, many pointing to benign files, suggests a link farm strategy to obscure the malicious redirector.

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=sunset+mortgage+company+lp
    • https://0aaea974-422a-4c30-a151-a2a6661f1c4f.filesusr.com/ugd/c4f63d_b97f07a50bc0453aa5de44c9c2b19e8d.pdf?index=true
    • https://7df8c065-0662-48c9-8e69-50cac636f718.filesusr.com/ugd/7a359d_d9471948411e4c948083e4f31fc72299.pdf?index=true
    • https://83d35e16-0ca0-4af5-8eed-5f52bba27882.filesusr.com/ugd/70e7d4_a579d71056734bc996ea73928ed3f277.pdf?index=true
    • https://dae7b962-a7fc-470a-b920-e0769b5ba211.filesusr.com/ugd/b926a8_ab576b91a7cf4ae592968cf337783383.pdf?index=true
    • https://b172b19b-08e4-4e0e-9835-fed4d1421ab9.filesusr.com/ugd/01f9b9_8ed18483468b4be28ce410932ba54cff.pdf?index=true
    • https://70d8896a-57c4-47bd-b1fb-5d46f58f3fcb.filesusr.com/ugd/77941b_234e3b4ef17841a28e9bee1cd0ab9690.pdf?index=true
    • https://8a891aaf-5cde-4c9c-8d57-483bba35800b.filesusr.com/ugd/98e2de_9bfac90b1b3f44e1b13e3899c9bb418e.pdf?index=true
    • https://dda27ec5-58bf-4d5c-b0e3-f087a77ab102.filesusr.com/ugd/f523c3_9ac36a4139b84173b23701d28ebcb788.pdf?index=true
    • https://6b53cee5-8549-4f8c-930c-ac0d9cfc2d2b.filesusr.com/ugd/01e791_4d38e8d338d04f3ca16a2c597ab8dded.pdf?index=true
    • https://201853a5-c21f-4f40-80a0-3befe9e66728.filesusr.com/ugd/6cfc61_91effc247ea244ecb3e989d8010d5182.pdf?index=true
    • https://c446c157-e2d8-4190-975a-f7c95e424241.filesusr.com/ugd/e1a791_8988b10986144b6792820e11554af2c0.pdf?index=true
    • https://73c8f9ae-9f3d-4b0b-8de7-f3008241549e.filesusr.com/ugd/760a88_72f918fd65ec46988236da7056bb80df.pdf?index=true
    • https://6a720dee-8bb5-4f9d-9924-2b29d054eaf9.filesusr.com/ugd/48f461_a9a7fd6b07b9472ba4c34a55cf3d6e93.pdf?index=true
    • 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_off00006573.bin
d053e3cdcb045c70a1cfd5d891d351339fba7c05f50c164289071bdaea647068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 5456 bytes
font_01_sfnt_off000077f2.bin
9b95c448c1b7e09793aea5b2ff05c52d895bc460e42b51fff3e1e40ae18a3a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77F2 10676 bytes

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