Malicious PDF — malware analysis report

Static analysis result for SHA-256 346300091fb7034d…

MALICIOUS

PDF

34.5 KB Created: 2020-09-03 13:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e7b2a9eb3fd0aa7b9b6c247532ef524 SHA-1: 390b2a992a7bafdab3cb6a0cf49f91a248211c09 SHA-256: 346300091fb7034dd21ddb040289f9d48f5b7a170fc416cff9845dbabcfbeb99
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is a malicious redirector link, pointing to `https://ttraff.club/wix?keyword=free+lucky+draw+poster+template`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links. The document body, though heavily obfuscated, contains the same lure text and URL as the redirector link, suggesting a social engineering attempt to trick users into clicking the malicious link. No scripts were extracted, and the primary malicious behavior observed is redirection to a potentially harmful site.

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.club/wix?keyword=free+lucky+draw+poster+template
    • https://static.usrfiles.com/ugd/dbbfd0_69aa26ef5bfe46299131c0fb17eecd56.pdf
    • https://static.usrfiles.com/ugd/08e331_a59ed3bd7604464c8e05798221808535.pdf
    • https://static.usrfiles.com/ugd/b8c837_b72b27a34f524b0f8a4beff5cfb824de.pdf
    • https://static.usrfiles.com/ugd/e78b77_f0967e1579ea46d3bff2e8afd24e3ff6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/precalculus_textbook_with_limits.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/adara_nisadas_video.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/wesuwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/bekositin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/30723411496.pdf
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/97778957696.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/lyman_reloading_manual_50th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5271/files/fisumepuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/temperament_types_and_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0462/0232/3094/files/carers_allowance_form_dwp.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_off00004a83.bin
bb87dace6b2b5a351a1b5abe5f23b856b5240b97e86a7184d36f0ea4afed269e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A83 5432 bytes
font_01_sfnt_off00005d09.bin
94f373906e084081eab17e22b627dfbfeaed4209a38fd62bc7d436001ca03bc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D09 9492 bytes

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