Malicious PDF — malware analysis report

Static analysis result for SHA-256 af4e181431985b0b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 01:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f9f94b3378dc7229bb3eea83a6194a SHA-1: fcc2005b95a0778668c7f0cfbc3aa62ef7ffeb7c SHA-256: af4e181431985b0b3ce7b7d8e29406a47bdb4324f9ca3a59ff94583c9b8bf4b0
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'Azerite armour guide'. The presence of a link farm and a high ML classifier score further indicate malicious intent, likely to redirect users to a malicious site for further exploitation or credential harvesting.

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=azerite+armour+guide
    • http://kedobepu.kyrakalageorgi.com/uploads/1/3/0/8/130874001/cbc579.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vujunuvitiwowus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/xuvogaxudimip.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/busunolevomimatadoxate.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1046/files/rapid_sequence_spinal_anaesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/50168762460.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/26940039676.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/65276325447.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/bhayya_movie_video_songs_hd.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.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_off00006c94.bin
fb576110bd7947c8078f6133dff892ed0a1e485ee17b68ae1a8862b5cccfe3a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C94 4976 bytes
font_01_sfnt_off00007d6a.bin
5c20a74e66395bea04cfbe168d223817ec03786ed8d66ce9a1041d82b267255d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6A 10764 bytes

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