Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa53dafc14659e28…

MALICIOUS

PDF

42.4 KB Created: 2020-08-28 06:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46c129ca9812d82973b3078ee19f63d3 SHA-1: 373087536f07a712de6d86746638af8dc13091c1 SHA-256: aa53dafc14659e28f6133233d5b36ffd404648037abee1d74150ebe6d51a35b5
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the text 'Blitz3d programming manual download' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for malicious content.

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.com/pify?keyword=blitz3d+programming+manual+download
    • http://rimumijox.lindsaywincherauk.com/uploads/1/3/0/7/130776433/mekugoru.pdf
    • http://files.jasminekreig.com/uploads/1/3/2/7/132740327/02d5c01bec73.pdf
    • http://files.rabiamalik.net/uploads/1/3/0/9/130969663/litatubemawetuk-satekujul-paxebigu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/xutaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/hotel_accountant_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/dell_t340_specs.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/xopemarisuvim.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9578/files/45907421090.pdf
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/million_dreams_piano_sheet_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/43284977376.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/timatusozigunovitem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/boston_bike_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/answers_common_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0459/2923/4599/files/9586198752.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/jusamisedakawopekuxifi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/44508038942.pdf
    • https://cdn.shopify.com/s/files/1/0431/7301/9808/files/seveme.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_off000066ea.bin
61bd14c120ad5a057980a22a1ba23d73ed3520a5252afa67d574b1106748f3af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EA 5456 bytes
font_01_sfnt_off00007976.bin
bc1aced131c814d7b31c93444b4012ea3ea5f14702be5416de4bc9cf484feeb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7976 10308 bytes

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