Malicious PDF — malware analysis report

Static analysis result for SHA-256 5373e187cca93933…

MALICIOUS

PDF

37.4 KB Created: 2020-08-28 02:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47551739c4462a0de0b7f93329c74b51 SHA-1: 283d9dec618a3aec7da97cf90b065c08a520d15c SHA-256: 5373e187cca939332695e095d7f290c9ce156f329982cff3d295766f3605dfe1
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive lure, presenting itself as an 'answer sheet listening ielts' to entice users to click on embedded links. One of these links, 'https://ttraff.ru/pify?keyword=answer+sheet+listening+ielts', redirects to known malicious infrastructure. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The primary intent appears to be redirecting users to malicious sites through social engineering.

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=answer+sheet+listening+ielts
    • http://terap.davedelcampblog.com/uploads/1/3/0/8/130874655/bemom.pdf
    • http://xurubixu.dbworldphoto.com/uploads/1/3/2/6/132695615/0179a273dbd1.pdf
    • http://wirew.ajditty.com/uploads/1/3/1/4/131409090/db82cc3eba772bf.pdf
    • http://budira.danvilletrikappa.org/uploads/1/3/1/3/131380729/6930188.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/10603274420.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/jiwatevulaxotaxagukime.pdf
    • https://cdn.shopify.com/s/files/1/0437/1585/4490/files/51313768231.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/mitchell_on_demand.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/tricast_margin_pole_spares.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/fitogaborek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/56474797106.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/baxopenopo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5103/0430/files/lexique_informatique_francais_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/luvanodobujukik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/tubawojujakimi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/wozuwe.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_off00005631.bin
5fc3ca843d8e8cc43c80666ed81dbb62cef9fece3df0d623c75a3fc5e28eae63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5631 4820 bytes
font_01_sfnt_off000066a0.bin
e16b1bc13f30f24dd94d02c8f776b08fafddfd71ae3f6df58f9f7c1f16967fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A0 10016 bytes

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