Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1e92230e11b999…

MALICIOUS

PDF

40.5 KB Created: 2020-07-31 22:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac45efaaa457236e66e713ca9a68215c SHA-1: dbf76878b25d41d12c7f837bf54880d4f465b70b SHA-256: be1e92230e11b999a3f703607f202295e3e37f93e5abe58b7aa137b58966e0ca
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to manipulate search engine results, with a prominent link to 'ttraff.com' that redirects to a page offering to 'play pacman free online'. This suggests a social engineering lure to drive traffic to potentially malicious content. The ML classifier strongly indicates maliciousness, and the PDF structure is consistent with SEO spam techniques.

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.com/pify?keyword=play+pacman+free+online
    • http://files.littlechalkhouse.com/uploads/1/3/2/7/132712015/sagukapaneveru_pizepe_namewoj.pdf
    • http://files.ddtpphinc.com/uploads/1/3/1/4/131453253/a71ae2.pdf
    • http://files.alaskaexpeditiontours.com/uploads/1/3/0/9/130969371/3628370.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/majibis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/sepotufex.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/nitewixoluvip.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/28735642608.pdf
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/91064545109.pdf
    • https://cdn.shopify.com/s/files/1/0432/1574/9281/files/menemidufezozonu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/91517990300.pdf
    • https://cdn.shopify.com/s/files/1/0437/7418/1537/files/wipiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/82620143888.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/78901009728.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/84252064324.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/18627596167.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/mapodoxorebumenibi.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_off0000547e.bin
93c6e67fe537915de9788def029b3ba2895ef5fcbcfd3c82e7bda574fba0b1d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x547E 4792 bytes
font_01_sfnt_off000064a8.bin
8d9a2e5b8013c4b662ed0344618d497813d08af59e0f718ebfedb80092669647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 10100 bytes
font_02_sfnt_off0000873a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873A 4324 bytes

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