Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c2bb564e168485…

MALICIOUS

PDF

36.4 KB Created: 2020-08-27 15:25:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ca1fd9af57f8ee72fd4354a4171230c SHA-1: 54b3c6cc8bd67f5fd5ce23317db80e4921360e71 SHA-256: e3c2bb564e1684851c24df5dcfe73f9021455549f5ddb35ea3958402d8af7b3f
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, specifically pointing to 'https://ttraff.link/pify?keyword=industrial+plastics+theory+and+applications+download'. This indicates the document is designed to trick users into clicking the link, likely leading to a malicious site or further payload. The presence of a PDF link farm heuristic further supports the malicious intent of distributing 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.link/pify?keyword=industrial+plastics+theory+and+applications+download
    • http://files.spencerkezhouxiao.com/uploads/1/3/1/4/131453143/2276506.pdf
    • http://dureneru.johnjfrederick.com/uploads/1/3/1/4/131437092/91cc0e435.pdf
    • http://lidenakej.alextechinfoforstudents.com/uploads/1/3/1/8/131856333/zijerozifonerofoku.pdf
    • http://files.thefaithfulpout.com/uploads/1/3/1/3/131383602/mejar_ridun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/nys_math_common_core_standards.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/79844800132.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/dupalateseti.pdf
    • https://cdn.shopify.com/s/files/1/0428/1358/7622/files/afcat_02_2019_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0440/5588/8022/files/jakoxawibojosabazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/gifij.pdf
    • https://cdn.shopify.com/s/files/1/0434/3863/7208/files/kaala_patthar_songs.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/2407373570.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_off00004f3b.bin
583dbf92e187483286c9cb5fd8b14ebfadbb362f54b9d1c5e328987dab6b7f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3B 5292 bytes
font_01_sfnt_off0000613c.bin
2e4e10dae5227cb5c396a8fd8b8310e2654a962383e97752465af2babed024e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 10408 bytes

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