Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab708a4996f4f758…

MALICIOUS

PDF

42.1 KB Created: 2020-08-27 17:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 581c170edcd75763b0c52035a9101388 SHA-1: 310f7df3bde6a3beea71c2d5084be58a1a9a7263 SHA-256: ab708a4996f4f7588dbd581fe5e328817dedb2fa339118cb884f0f5ad55db0ff
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a malicious redirector link. It also contains a large number of external links, forming a link farm, with the primary redirector pointing to 'https://ttraff.com/pify?keyword=triangle+d%2527or+positionnement'. This suggests the document's purpose is to lure users to malicious sites. 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=triangle+d%2527or+positionnement
    • http://ruvimeki.rochonlab.ca/uploads/1/3/1/4/131453720/tejugetaramig_sikelisakumib.pdf
    • http://xaludar.onesailorboutique.com/uploads/1/3/2/6/132683169/8266921.pdf
    • http://nakulare.brandito.net/uploads/1/3/0/7/130776008/c0512094658.pdf
    • http://files.caremoresa.com/uploads/1/3/1/4/131437953/4186111.pdf
    • https://cdn.shopify.com/s/files/1/0434/8402/0898/files/21740887705.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/behaviourist_approach_to_learning.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/73596800039.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/316748589.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4344/files/dimensionality_reduction_by_learning_an_invariant_mapping.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0785/1171/files/lewojebijeseruniv.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/33253921411.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_off00005a64.bin
61352b1b265390e65c478f954187b4bc1bd63c9b68a67513918560a6cfc097d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A64 5048 bytes
font_01_sfnt_off00006b71.bin
312dbb8a53be054ec08e3d8a50939c8d7d0ad1064229822227f93415a3aaaceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B71 10064 bytes
font_02_sfnt_off00008d9c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9C 4324 bytes

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