Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dc714edcf033a8…

MALICIOUS

PDF

46.0 KB Created: 2020-08-24 20:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6da91fe17429707edc9b1017c229bef3 SHA-1: bf3c4624c3a02d4744e18598e505c666779c5d90 SHA-256: e2dc714edcf033a8efaf9512b3d13b325ada081788a803964f2e49aa4870d74e
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains the same keyword as the malicious URL, suggesting a lure. The primary attack pattern involves redirecting the user to malicious infrastructure via a link embedded within the document.

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=double+digit+addition+with+regrouping+printable+worksheets
    • http://files.irishtimber.org/uploads/1/3/1/8/131856954/9640888.pdf
    • http://files.rockthecatspa.us/uploads/1/3/1/4/131437619/vuwudexuj.pdf
    • http://files.weddingsatheronswoodgarden.com/uploads/1/3/1/4/131437983/mubiladawazevurupek.pdf
    • https://cdn.shopify.com/s/files/1/0451/3811/6773/files/banking_system_in_bangladesh.pdf
    • https://cdn.shopify.com/s/files/1/0437/9161/4114/files/calendar_september_2019_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0432/4648/5672/files/45431727199.pdf
    • https://cdn.shopify.com/s/files/1/0433/9836/5340/files/physical_problems_of_old_age.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/wolf_creek_ski_area_snow_conditions.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/gapojusabudijekomiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/famafikelekawogoxomulemap.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/zuxiferotuwamog.pdf
    • https://cdn.shopify.com/s/files/1/0444/2108/7398/files/saxizivunotewamubum.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/69306709488.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/dipinu.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_off00006e86.bin
4c36988b9408ab54ca9019f99de259ddaea2855161683ad4020e743f99fd976c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E86 5516 bytes
font_01_sfnt_off00008143.bin
4b3b3c2ac4bb2a1b0b961558f583cc4ecf22d0223a0231f0905a138f9561ed62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8143 12096 bytes

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