Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f22f9ea22df803c…

MALICIOUS

PDF

33.5 KB Created: 2020-08-02 21:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967fc5a898069932d6ef387702d4304b SHA-1: 00b7ef5635d5ac807b68483eb22dd77d49fceba5 SHA-256: 2f22f9ea22df803c960d04bcfe4cf9e0fd2848bf677f1a9f6e80d47576a74a03
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, directing users to a malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains references to a 'Fisher paykel dryer repair manual' and the tool 'wkhtmltopdf', suggesting a lure to trick users into clicking the malicious link. The presence of numerous embedded URLs pointing to Shopify domains, likely part of the link farm, further supports this attack pattern. No scripts were extracted from this sample.

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.com/pify?keyword=fisher+paykel+dryer+repair+manual
    • http://files.rrlwc.com/uploads/1/3/2/6/132695915/voraditexesak-filikigafezuw-dakuvibunilesom-sifos.pdf
    • http://files.paulamontgomeryart.com/uploads/1/3/0/7/130775071/pisafilafosawev_zegiji_texonarazovunog.pdf
    • http://files.rachelpevsner.com/uploads/1/3/0/9/130969809/8903421.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/netetudizuzad.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/10238384598.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/21546085007.pdf
    • https://cdn.shopify.com/s/files/1/0437/6910/2485/files/35278392634.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5333/files/gamefisher_15_hp_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/948847125.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/pifemefofutafikamixobepif.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/29755983100.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/kizurun.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_off0000465e.bin
70268e1f75b5367677ef790b7d57b22a5d9a24a3f6d8e1e0c654999349c3de66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x465E 5320 bytes
font_01_sfnt_off00005853.bin
049f0cfd86a13723861a5e637e1c2e91cb200ff3a82ee4f5f17ba5fb02cb4ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5853 9672 bytes

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