Malicious PDF — malware analysis report

Static analysis result for SHA-256 3055cd1c1ccb5006…

MALICIOUS

PDF

115.4 KB Created: 2020-08-01 12:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c178ae917a4f6df9971b36dff3f8b49 SHA-1: c6a204825a51e4fc3a7c6e89c7e7a5a54579aff8 SHA-256: 3055cd1c1ccb5006f4185c7b019a6bf5e4ab004d958212c898de86cb650be9b6
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a link farm and a redirector link. The primary URL, https://ttraff.ru/pify?keyword=kia+sorento+transmission, is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended destination. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate a malicious intent to redirect users.

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=kia+sorento+transmission
    • http://files.brendarachel4angels.com/uploads/1/3/1/3/131398338/misorola.pdf
    • http://files.fexasas.com/uploads/1/3/1/4/131437680/sobaresesasejedenix.pdf
    • http://files.conscious-learning-community.com/uploads/1/3/0/7/130739892/zemakiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/lufuxewudogel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/gakabaxiregixogapu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/kijasebumosuboxiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/29849986070.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/94628195133.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/22686664525.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/57404144780.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/zutivujupu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/tizibitexam.pdf
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/61715879722.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_off00015bba.bin
bda3756948d06ca195e272a6ef83ad77fae721e7d0e4032c801c9a5f9b2ddb2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BBA 3460 bytes
font_01_sfnt_off0001683f.bin
7c3a90315280259f88bfb83ea75a5c6cd2e76a40225d4d9eee6564a49a78ee1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1683F 4768 bytes
font_02_sfnt_off00017861.bin
ded1c506a44fcec013994c815a3e812012c73d363e132396e5edf63d9d26b1a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17861 15968 bytes
font_03_sfnt_off0001aa57.bin
991c7152607ba82e84fd5418ad8e641d3266c93eefd3b40d1ed7dea1b850d5a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA57 16148 bytes

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