Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6f9e8958dd01bf…

MALICIOUS

PDF

31.6 KB Created: 2020-08-18 20:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffec914594c73a514b4affea7b6298fd SHA-1: b3f4b84b56d56453ecae9bf3d0d7d944497de296 SHA-256: 8b6f9e8958dd01bfbae0571ee4df28571ba37d064b6a0fabc0ff084f990eb923
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the links directs to ttraff.ru, a known malicious redirector. The PDF_SEO_LINK_FARM heuristic further suggests that the document is part of a link farm, likely for SEO poisoning or to distribute malicious content. The document body contains garbled text but includes the target URL and mentions 'Apostolic church of ethiopia video', which might be used as a 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=apostolic+church+of+ethiopia+video
    • http://files.thegalaxygemsboutique.com/uploads/1/3/2/3/132303269/samak.pdf
    • http://jafagox.topthatcakedesigns.com/uploads/1/3/0/7/130775258/5c2772869.pdf
    • http://files.theamericanbrabantassociation.net/uploads/1/3/0/8/130874544/5786866.pdf
    • https://cdn.shopify.com/s/files/1/0431/5561/9994/files/5084703458.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/13805405391.pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4135/files/rajorejilemelon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/juxusifuvofo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/43970927472.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/fahrenheit_451_guided_reading_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.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_off00003f3b.bin
7ca04de8f985021f26f3254c4d569269422bb0e7609f2eb21b1ccd59dac83f34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F3B 5292 bytes
font_01_sfnt_off00005138.bin
fd2e2932d097698cc0737c1458ac4d5de869f2a6261eabd12d0648f7bb1fd663		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5138 9604 bytes

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