Malicious PDF — malware analysis report

Static analysis result for SHA-256 540374ac424b5ad4…

MALICIOUS

PDF

37.8 KB Created: 2020-08-28 00:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69c5544dac18336758702fd377009729 SHA-1: 379938d4684c4751620ca5ebd4b12dabeb98c1d2 SHA-256: 540374ac424b5ad4e440f71bd3b7a71dadc099f606c62cc1727ac4d2713dbfb0
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'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted, but the presence of malicious links is sufficient evidence of a malicious redirection attempt.

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=tieu+ngao+giang+ho+2003
    • http://files.freshmediatt.com/uploads/1/3/1/4/131437599/wozewuzawuvev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzibuwusupamodugibeboz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/turkey_bird_farming.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/volkswagen_app_connect_android.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/62212606109.pdf
    • https://cdn.shopify.com/s/files/1/0431/8593/0402/files/68528411303.pdf
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/zejedusataluzimejetaxa.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/xibigipavusixovebafavivib.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/aditya_birla_mutual_fund_android_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/dizibitagaxotov.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7607/files/zibafozezixetirur.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004860.bin
ff83deef2c97b08ecdcf1e3dc8fb85dd56473619ffa90972ef2a1f444fa135c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4860 4148 bytes
font_01_sfnt_off00005703.bin
586930c595c885803e357ddd9ebb55fc5b9b9ff8e61b33595a71b6d959885fbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5703 5028 bytes
font_02_sfnt_off0000681d.bin
f82758d8dee57a98bf62168f46dd90f6a9ffe48d254a7c5d84cec72ffc0e3484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681D 10400 bytes

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