Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c7ddaa63f88ca4…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 18:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9865983940b833538eecc3f1be583d06 SHA-1: 5f859455498670b969d5f72f81e66e3afd07d34e SHA-256: b0c7ddaa63f88ca44b5b35d3868d1b8c283800ff25c5e09237399f3d677a9594
150 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and heuristics indicate it contains a mass external PDF link farm. The document body, though heavily obfuscated, contains references to 'animated pokemon sprites' and includes the malicious redirector URL https://ttraff.ru/pify?keyword=animated+pokemon+sprites. This suggests the document's primary purpose is to redirect users to malicious 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.ru/pify?keyword=animated+pokemon+sprites
    • http://files.florabysk.com/uploads/1/3/2/7/132740552/176a86.pdf
    • http://files.destinationdancesb.com/uploads/1/3/0/9/130969169/d62a0e2ed84.pdf
    • http://files.somersetsnowsportsservicing.com/uploads/1/3/0/7/130740068/vuluza.pdf
    • https://cdn.shopify.com/s/files/1/0437/9266/2688/files/tuniponoluj.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/tijosogagefoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/62872919700.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/kiwoketi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/guwaxabewagimurarofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/balaxijonibure.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/90496791754.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/44000668860.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/29853698848.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/76054770479.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/40273177539.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/jose_peppers_nutrition.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_off00006c73.bin
6531d7d2e5074b35d3173dacdd2fc37fec14d4235d4d77489eaa4ad9fe41e9dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 5124 bytes
font_01_sfnt_off00007dc3.bin
a5e00afb028d1ce77ac09f5e755ae2699cde81a9a1af5f6116c14ebb19663b50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC3 10328 bytes

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