Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d90710120891b26…

MALICIOUS

PDF

33.5 KB Created: 2020-09-02 00:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bd952952e8e84b42dd6f4a7754f0e2b SHA-1: 02ff86fc7338ff1ae00b95cdeebab57c7189b3f3 SHA-256: 4d90710120891b266fc9df8919a9af83548e9a8648e17930331bdc155c787af0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with 'cdn.shopify.com' being a dominant host. The document body, though heavily obfuscated, contains the same malicious URL and a reference to a PDF file hosted on Shopify, suggesting a lure to external content. The primary intent appears to be redirecting users to malicious infrastructure.

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/wix?keyword=dryer+sheet+hacks+pan
    • https://cdn.shopify.com/s/files/1/0432/8115/4214/files/felogosedefitadej.pdf
    • https://cdn.shopify.com/s/files/1/0435/6984/0283/files/mejogipojizapajol.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/the_cleveland_clinic_cardiology_board_review_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0459/2474/5367/files/paxolupirem.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/36381590275.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/43179709670.pdf
    • https://cdn.shopify.com/s/files/1/0435/4870/4920/files/speaking_activities_in_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/210599405.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4301/files/rifina.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/89228515536.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/69652993597.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_off00004793.bin
34e8aeb7945df3d6849b9969ffe6579f586c21136139755182510127af589d0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4793 5156 bytes
font_01_sfnt_off00005924.bin
4192843686e591b6350c00349dc24838d599a0d78355415055f68e47565db092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5924 9560 bytes

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