Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d0a02d158a228f…

MALICIOUS

PDF

40.3 KB Created: 2020-08-11 18:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f20501fd93a241b50782c9c48139d67 SHA-1: c54fa59259edb80d54ce3c5cd0525d2b1ce4212e SHA-256: f2d0a02d158a228fc58c772649d9f037c7c9f9bf61375fcda8905301618b27b6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/wb?keyword=merge%20jpg%20to%20pdf%20software'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The file's purpose appears to be directing users to potentially harmful content through a link farm.

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/wb?keyword=merge%20jpg%20to%20pdf%20software
    • http://files.thekingdomiswithin.com/uploads/1/3/2/6/132696104/pevapajekopexo_pobawokuk_robuzaravivizeg_dedowapo.pdf
    • http://files.stonehouse-studio.com/uploads/1/3/2/7/132712315/5075796.pdf
    • http://files.musicartssessions.com/uploads/1/3/1/4/131454560/gugoninopezetit_nuxas_zonifosegora.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/how_to_initialize_a_hard_drive.pdf
    • https://cdn.shopify.com/s/files/1/0435/5276/8151/files/26291825913.pdf
    • https://cdn.shopify.com/s/files/1/0449/6615/0303/files/zafejuveweripofo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/67997298061.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7603/files/48830184252.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4105/files/75601278725.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/81515031512.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/berajaladur.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/definition_of_writing_by_different_authors.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/27777677061.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/zizuzigalaxawimuwurofok.pdf
    • https://cdn.shopify.com/s/files/1/0433/9420/3806/files/88216387202.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_off00005ff6.bin
20207929998d30994d65acb604b392cf712fe24242c672ba97312b49aa954c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF6 5348 bytes
font_01_sfnt_off0000725b.bin
93e755da9c2d6bc76fe8c5f794765985c3a7ef62fe847a2e08cf8a8defc3ab09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 10020 bytes

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