Malicious PDF — malware analysis report

Static analysis result for SHA-256 296c1e404a779069…

MALICIOUS

PDF

47.6 KB Created: 2020-08-29 04:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd41ab166d658d99028c74f562dffa01 SHA-1: 1b7dc615ec843d0826125956c1d9063ba76b3257 SHA-256: 296c1e404a779069395a1c80850ed94f01749cb738f4761fd52ec771bdfbd21f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=1974+vw+bus+mpg'. This indicates an attempt to direct the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous other links to Shopify PDFs suggests a link farm or SEO poisoning tactic to obscure the malicious redirect.

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=1974+vw+bus+mpg
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/roritofube.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/81639044252.pdf
    • https://cdn.shopify.com/s/files/1/0432/1250/5252/files/libro_bls_2020_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/23564562921.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5490/files/english_guide_for_class_11_fbise.pdf
    • https://cdn.shopify.com/s/files/1/0452/6528/9378/files/nikijolofuze.pdf
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/62767219375.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/jererumozigamivutusetize.pdf
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/32975713580.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/brindisi_la_traviata_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/centuries_of_childhood.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_off00006e57.bin
5bad75e5210cb5192d0ffec2dd8b3caca29857b8837ce60c189c5d3ecfa9d960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 4796 bytes
font_01_sfnt_off00007eb4.bin
0dc8bf18640a113118520b54447705acee6b745a257c71476a71a3f088eb90c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB4 11420 bytes
font_02_sfnt_off0000a445.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA445 4324 bytes

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