Malicious PDF — malware analysis report

Static analysis result for SHA-256 85cba2db8e1a2677…

MALICIOUS

PDF

38.6 KB Created: 2020-08-29 03:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f9dc8bed1f735cd4df740e0a275445a SHA-1: 0028180437416c86d953785cd032f4680f55e0c4 SHA-256: 85cba2db8e1a2677c52da6a979e6116d83305177ed0e4bfae6248eccbd08ea5f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=new+hot+xvideo', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=new+hot+xvideo
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/lexukek.pdf
    • https://cdn.shopify.com/s/files/1/0428/7938/5766/files/48065420108.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/52643624755.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7472894cf8c4921895d0f1fdb15bfad.pdf
    • https://static.usrfiles.com/ugd/b8c837_29124ebfb1394f6890e91d97662791a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_3da18023befa43ed9d4ec3fe143e4c6e.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/83375331953.pdf
    • https://cdn.shopify.com/s/files/1/0459/1756/9173/files/zidaxuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/clicker_heroes_gild_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/rafazumiferubanolotazog.pdf
    • https://static.usrfiles.com/ugd/b8c837_30ca9d38d8474d549094ef80b5c05124.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a0b6046ad114dd39fdaab408f25ea4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_588dbc5bd472479db7ae59b392ec3bdd.pdf
    • https://static.usrfiles.com/ugd/b8c837_2de4f61e230b4eeb8bfdccea37108081.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_off00005b6c.bin
f216109cf75170b4cbff18f409a11e80835a166b0c916a6075b3f44f6ae460f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6C 4584 bytes
font_01_sfnt_off00006b1a.bin
00153d72b858004e68b37f5cfb2966463e9a31e446559647e57075b33f95d723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1A 10252 bytes

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