Malicious PDF — malware analysis report

Static analysis result for SHA-256 adfc08c63d7a1bb1…

MALICIOUS

PDF

42.4 KB Created: 2020-08-15 11:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47aa1c3c000c5d727137089f7f73c426 SHA-1: 98029774ba94af2eb22db239f31960a622f1decd SHA-256: adfc08c63d7a1bb117ce9454b482658bf1305b0aac16e94f81e12437e2b18392
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wb?keyword=focusrite%20scarlett%202i4%202nd%20generation%20manual`. This URL is presented within the document body, disguised as a manual for audio equipment, to entice users to click. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, but the primary malicious intent is the redirector. No scripts were extracted, limiting further analysis of payload delivery.

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.cc/wb?keyword=focusrite%20scarlett%202i4%202nd%20generation%20manual
    • http://wogaselop.cerealalchemist.com/uploads/1/3/2/7/132741099/26bcb285bb.pdf
    • http://files.gavinhegarty.com/uploads/1/3/2/6/132683121/7731c4.pdf
    • http://files.activeagingecho.com/uploads/1/3/1/0/131070291/tilumolakemoto_tegabujivu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/76278221942.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/19068621674.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/dizupigoma.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6279/files/najebilukanomeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/15666771148.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/38785143880.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/basics_of_accounting_in_tally_erp_9.pdf
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/speech_organs.pdf
    • https://cdn.shopify.com/s/files/1/0437/4423/1575/files/79056662733.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/gipuriguwogomibirawenuzep.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_off00006470.bin
5a9d0dbf82eb0b875f6ec69a13ea6c3ae4d807b7591b0ab75f0d464f04e17f0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6470 5436 bytes
font_01_sfnt_off000076d7.bin
5301ac3218940c4ab89370d0010f06c79322769942121d6685b2d537a32fa162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D7 11136 bytes

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