Malicious PDF — malware analysis report

Static analysis result for SHA-256 b319a2c002948a4b…

MALICIOUS

PDF

38.8 KB Created: 2020-08-20 04:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49a82327bf7007d2572481037c085535 SHA-1: a05edb7639dace80226d87df59ae06aa979be8d9 SHA-256: b319a2c002948a4b47f8a22870a87bb27c50d9aa9bbea45dec21570e9f621284
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous links to PDF files hosted on Shopify, some of which are benign, indicates an attempt to blend malicious content with legitimate-looking resources. No scripts were extracted from this sample.

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=andragogy+theory+pdf
    • http://files.americanfoursquare.us/uploads/1/3/2/7/132740218/majibomavapakabopi.pdf
    • http://xikomisob.soubustafarms.com/uploads/1/3/0/7/130775350/satezunivin-wojavilafino-muperu-bipuwegefaluw.pdf
    • http://dikawox.hopefulplace.com/uploads/1/3/1/6/131636725/jawetebejaliz_wiwilujogepoxib_ruzazafe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1024/5279/files/jeopardy_questions_and_answers_for_seniors.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/wirib.pdf
    • https://cdn.shopify.com/s/files/1/0428/4458/6140/files/tevelofupavulabasaxawas.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/50390830970.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9605/files/skarner_jungle_s4.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/74644493820.pdf
    • https://cdn.shopify.com/s/files/1/0432/8839/5936/files/bollywood_thriller_movies_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/pikuzi.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_off00005b6c.bin
75ada8b92eb81deb2a0424b9d15e9badcf1e80ead61a48d80b6bcf8747e12a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6C 5184 bytes
font_01_sfnt_off00006d0c.bin
5977a0dd4a170f089a37ce29e58000e30f9b1c6debed175c9d39d51017d877d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0C 9956 bytes

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