Malicious PDF — malware analysis report

Static analysis result for SHA-256 54b465cb421fc051…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 08:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71472abc42f2e3c83ac139942a891a36 SHA-1: 3880505d37ae1abf7a5426bc4cb474157ee24f25 SHA-256: 54b465cb421fc05153e9c66b4a596fcfd2fb61fbdbdbff117dbcd6f2a28bca52
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. One of the embedded URLs, 'https://ttraff.com/pify?keyword=blueberry+wine+nutritional+information', is flagged as a known malicious redirector. The document body appears to be malformed or obfuscated, but the presence of these links strongly suggests a malicious intent, likely to drive traffic to malicious infrastructure or for SEO abuse.

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=blueberry+wine+nutritional+information
    • http://files.themerchantsofvenus.com/uploads/1/3/1/1/131164572/waxomubotan_pifeloma.pdf
    • http://jerit.ewaldseries.com/uploads/1/3/2/6/132681670/xilutuzixipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4348/files/minecraft_animal_spawning.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/17738635184.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/gafivolozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/zateruf.pdf
    • https://cdn.shopify.com/s/files/1/0447/8078/1734/files/34213245713.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/31842313490.pdf
    • https://cdn.shopify.com/s/files/1/0441/1791/7848/files/rational_functions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/f._trrega_capricho_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/john_deere_la115.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/17950502785.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/convert_to_html_using_apache_poi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/47103583221.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96328102714.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/98711166998.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_off00006fdb.bin
e0768299cc3084f8b80a0f3343362f30d8b0b906b9a09b6ebd7b246ad4a70553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDB 5120 bytes
font_01_sfnt_off0000814b.bin
ef48bd454f9bc2799c6efbf9831d473de1edd49de27577de6be08518588e010c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814B 10408 bytes

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