Malicious PDF — malware analysis report

Static analysis result for SHA-256 9238562b01e85ecd…

MALICIOUS

PDF

72.2 KB Created: 2020-08-17 06:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 982dda50b1aa0bf205ca1442ed0cda10 SHA-1: 33a956d02a96b589f1396e034ec1ca46d1b47ce4 SHA-256: 9238562b01e85ecd58abf0340020797582c034f48948c68d403a2d145906e5ba
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to this same URL. The presence of many external PDF links, including those hosted on Shopify, suggests an attempt to manipulate search engine results or to distribute further malicious content.

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=manga+byousoku+5+centimeter
    • http://gemem.ormsbyeditions.com/uploads/1/3/0/8/130814110/fexinazadevifezode.pdf
    • http://files.balloons-lit-journal.com/uploads/1/3/1/3/131398333/wavofibaribapawawi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/zudunejofesefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/lavaxaxipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/dekomoxukesebuvozopi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5076/1377/files/budaya_visual_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/bexipomajofuvitogixalufaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/98747189427.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/41047057354.pdf
    • https://cdn.shopify.com/s/files/1/0432/1011/3188/files/bonnie_and_clyde_biography.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/97078784388.pdf
    • https://cdn.shopify.com/s/files/1/0438/9172/0347/files/nier_automata_pyrite.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/
    • https://cdn.shopify.com/s/files/1/043

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009938.bin
7f8f099649d5b519cf15513541e08c22f7d6b07bd60cf4d2a62868c7f4926055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9938 21508 bytes
font_01_sfnt_off0000dd4b.bin
87ac0585255c56aa8e939f116789636802bfe0f455a6a1f3a3e70e8e0d981220		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4B 5524 bytes
font_02_sfnt_off0000f01c.bin
5afeba2cdc920853d3d0796f11213f8b26386254a9dccd9d4a1eb3947a29c684		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF01C 10360 bytes

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