Malicious PDF — malware analysis report

Static analysis result for SHA-256 b15c1c0a1645f987…

MALICIOUS

PDF

42.0 KB Created: 2020-08-19 22:37:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92c5b177eee8f8b3f00c69b42301cfcc SHA-1: 9312f20220b04e656c07a07cd772a287ff886c24 SHA-256: b15c1c0a1645f9870af5f4531cc7ea6679fbf32b226c6953e6c89aed51a85809
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a 'Gta online hangar guide', with the primary link directing to a known malicious redirector. The document body is heavily obfuscated but contains the primary malicious URL. The PDF structure indicates it was generated by wkhtmltopdf, a common tool for creating PDFs from web content, suggesting a web-based lure.

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=gta+online+hangar+guide
    • http://koledut.drjustingallantnd.com/uploads/1/3/2/6/132695366/tofimegod-gukusedan-tunabimuv.pdf
    • http://wijux.raveyouth.org/uploads/1/3/1/4/131437940/folaxerezi_xeloxamakejukaw_wogugad.pdf
    • http://files.yantraearth.com/uploads/1/3/1/8/131871569/2200351.pdf
    • http://sutede.easecuritypatrol.com/uploads/1/3/1/3/131380429/jizewesetube.pdf
    • http://govaka.zhugenyang.com/uploads/1/3/0/7/130739456/bemikudib-bexetugosuded-webum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/rumotoguvusirutebaguto.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/dufemudixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/uterine_av_malformation_diagnosis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/suxileda.pdf
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/mitexefezonipe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7571/5743/files/pipokerud.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/19092642384.pdf
    • https://cdn.shopify.com/s/files/1/0432/1689/6159/files/pumevitoxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7873/0403/files/7203493988.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_off00006627.bin
e18a19219dbacaaf9dde35331f5dd53b65b46ed1c5f55e7a6510aac514f519fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 4940 bytes
font_01_sfnt_off000076eb.bin
8d754ac310c55e1d34a5717df773d49e3d0222e605347ca89c63bbc8e89fbaf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76EB 10868 bytes

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