Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae92100860ba6a0e…

MALICIOUS

PDF

58.5 KB Created: 2020-08-08 21:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891cccfb9e8c742f789b8152ecb37462 SHA-1: 8576ea1dc2a69fe21c07328f58341747607edaf6 SHA-256: ae92100860ba6a0ebf5111b2a2e3874450a6ea59eb6a6e867fc3b96dd61558f5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a 'PDF SEO Link Farm' and another flagging a link to a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=que+es+el+control+de+calidad+total+pdf. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it was likely created programmatically to host these links.

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=que+es+el+control+de+calidad+total+pdf
    • http://files.fauxmesticgoddess.com/uploads/1/3/1/8/131856381/gevaxil.pdf
    • http://files.panoramiccave.com/uploads/1/3/2/8/132814518/8127756.pdf
    • http://files.supercoltguitars.com/uploads/1/3/0/8/130814172/latoradi-supodafino-migesaxovoderin-sunabumipiso.pdf
    • https://cdn.shopify.com/s/files/1/0437/6156/5850/files/cm_game_booster.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/basic_car_parts_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/tazuduvotekodubimata.pdf
    • https://cdn.shopify.com/s/files/1/0440/5372/5334/files/afterburn_sylvia_day.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/56180436498.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/85855323092.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6422/files/digital_electronics_and_logic_gates.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/arabic_language_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0388/6238/files/miperi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/reduxuzolijonif.pdf
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/36079409716.pdf
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/35806374949.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/96092887336.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009858.bin
71179adda8e93d482792b9adf43824681d5a818820edcd2161a93674d33f341b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9858 5092 bytes
font_01_sfnt_off0000a9ac.bin
9ceacd773e8017bfe2df4e2218612870291439308d5d7119d6d663638b2504b5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9AC 11384 bytes
font_02_sfnt_off0000ce9d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9D 4324 bytes