Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb2084fcb6dfb6b…

MALICIOUS

PDF

55.0 KB Created: 2020-08-08 09:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d3adbad647966681c836bdacc605ed SHA-1: 1a1c786a51e5788576fd7a24d2a8cf8e65d8644a SHA-256: 7cb2084fcb6dfb6bb79f0deb68a08b2a3fddc00c1657648f244a818d44bfdbe0
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm for SEO manipulation or malware distribution. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=categorical+syllogism+venn+diagram+pdf'. While the document body contains garbled text, the presence of numerous links, including those pointing to Shopify domains and other file hosting services, strongly indicates a malicious intent to lure users to external, potentially harmful, 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.ru/pify?keyword=categorical+syllogism+venn+diagram+pdf
    • http://files.drivenlife.net/uploads/1/3/1/4/131483138/d53ac36f98b6.pdf
    • http://files.missioneventrentals.com/uploads/1/3/2/7/132740564/4578599.pdf
    • http://files.eitanhersh.com/uploads/1/3/1/4/131406841/rukarexug_wufuvire_wifilepuzob.pdf
    • http://files.aerlab.ca/uploads/1/3/2/6/132695569/medogu_lovitew.pdf
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/libro_caballo_de_troya_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7642/files/76544449557.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/79037435482.pdf
    • https://cdn.shopify.com/s/files/1/0429/3489/4755/files/nufumudezavuwebef.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/85051631592.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/petya_ransomware_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/18162576233.pdf
    • https://cdn.shopify.com/s/files/1/0434/3922/7047/files/ratugizivigevir.pdf
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/6384118092.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/18641049831.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/sisiwusizonerenalinufoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/angola_povos_e_lnguas.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/1733251111.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743c.bin
655dbe8d79d103a0563dfb3efbcf415a3ad7c76901355139d6f685691aa0010d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743C 5448 bytes
font_01_sfnt_off000086c5.bin
b2a679a8505e2ed26f40282279f2bbe0c2bd4adf76ed3f92f980fe13e67bda4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C5 11208 bytes
font_02_sfnt_off0000ab93.bin
ccd0ea095085b9379100d4de0d13d045157d8501f46cd3db2ef5c00475687e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB93 16088 bytes
font_03_sfnt_off0000c04b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC04B 4324 bytes

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