Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa1efd864cade76…

MALICIOUS

PDF

62.6 KB Created: 2020-08-04 12:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73b6b7724f337c1a34e38756d5a7b966 SHA-1: 617d96a460457783fefd8b9829d2d7bee5532135 SHA-256: eaa1efd864cade76ba405a68a1897e246cbcd036c755db929f205efec0655ef1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=arnhem+map+pdf'. The document body, though heavily obfuscated, contains the string 'Arnhem map pdf', suggesting a lure. The presence of many external PDF links also indicates a link farm or redirection strategy. 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=arnhem+map+pdf
    • http://files.sophalawyer.com/uploads/1/3/1/8/131857060/rulevolipubiw.pdf
    • http://files.mobileveterinaryimaging.net/uploads/1/3/0/7/130776079/d43c00ab7.pdf
    • http://files.willhutchinsonart.com/uploads/1/3/1/8/131856860/dakane.pdf
    • http://files.ecofloor.lt/uploads/1/3/1/6/131606954/liruzakirejuriluwu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8374/0822/files/sowavevutemewew.pdf
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/zovezekijamuba.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/ucsf_laboratory_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/zogijuleturuxez.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/como_pasar_de_a_word_sin_programas_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/33771789870.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/62639669680.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/zabawumupifis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/25890255543.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/71168626282.pdf
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/fijilofoketalogipew.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2695/files/xodikulu.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_off0000a8ab.bin
e9082a58b386522f988b9a91a0c94e62935c449da3a8ef86f69b5775ace11cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AB 5060 bytes
font_01_sfnt_off0000b9b6.bin
cc206985c653b8493b724bcbdaa1dfe64704538ef7f3db0fec8cf66c77542ece		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B6 16820 bytes

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