Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb00370877247b7…

MALICIOUS

PDF

52.1 KB Created: 2020-08-02 18:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4476f0d9e51b1c9cdbcc3a347620fdc4 SHA-1: 54767fd677e2f59a87c247ff1185a540d2f70e11 SHA-256: 8cb00370877247b716adcabebdd0e10aa0dbdecfc2d4716323cab333648da382
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 infrastructure. The document body, though heavily obfuscated, contains the URL that leads to this redirector. This suggests the primary goal is to redirect the user to malicious content, likely for phishing or malware distribution.

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=advanced+combat+tracker+plugins
    • http://files.unscriptedfest.com/uploads/1/3/1/6/131606454/tuxetalajil.pdf
    • http://files.sallysweetland.com/uploads/1/3/1/4/131438249/e377953a8cde1ef.pdf
    • http://files.stmaryscomberton.org/uploads/1/3/0/8/130813466/junuzujijaxi.pdf
    • http://files.chellesparklycorner.com/uploads/1/3/1/4/131407493/womato.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/82466210688.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/bisuginesifapizi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/xotuxikurujinojobulakaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/13213945096.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/romakibojorebegexetimelus.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/zodobabofakupid.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/gaketuxetiwab.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/wukogigikoruzab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/mowofawalejupezagorus.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/viktor_build_s7.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/74304371460.pdf
    • https://cdn.shopify.com/s/files/1/0438/1261/8402/files/21548550085.pdf
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/60800995335.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/4627966926.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_off0000875e.bin
a72cb2b5836490ef6451a0e1020f527e7278a498ff01ecb8d7dfb205a32007c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 5648 bytes
font_01_sfnt_off00009a7a.bin
43f03b119242ef2921d089fb03f620e8e65b76f462bb6c01d98babb15c5b9a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7A 12752 bytes

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