Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0a88cec55e274b…

MALICIOUS

PDF

48.2 KB Created: 2020-08-02 15:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a69abb85d0cdcf5ed760f40e9a037453 SHA-1: 94445a20d1a3a3a07f71cea2e98f86e0aca0e80e SHA-256: 2d0a88cec55e274b9a0328760abd69fe402d5c851368a6bf8c957b4d20fe5bce
150 Risk Score

Malware Insights

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

This PDF file contains a high number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Battlefield bad company 2 player count' and the malicious redirector URL, suggesting a lure to a malicious site. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=battlefield+bad+company+2+player+count
    • http://files.savoringcharlotte.com/uploads/1/3/0/7/130739715/rixilif-benexuze.pdf
    • http://files.birminghamathleticsacademy.com/uploads/1/3/1/6/131606431/futef.pdf
    • http://files.veeradonuts.com/uploads/1/3/1/3/131398076/4d408ced51.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/carrier_mini_split_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/21694123294.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/jpeg_to_ico.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/wamegi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/belusojuragujer.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/28371655954.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/pidakekuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/73626342606.pdf
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/46167847201.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/fokarajotepima.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/love_without_end_amen_chords.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/94875937857.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/93404099206.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_off00007e82.bin
f988a9aed8bdcdee672acd8829365e1c8f35eaaf8c21cb35b25554f866f2b9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E82 5544 bytes
font_01_sfnt_off00009157.bin
dc912e2bdf9dd3b2f5a6ab5f0997f9d5ea773af0762e5fac0c4d0a8400b0f0f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9157 10048 bytes

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