Malicious PDF — malware analysis report

Static analysis result for SHA-256 351ae9ce698b871d…

MALICIOUS

PDF

38.5 KB Created: 2020-08-23 02:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70a49d6aefde19784d28aeaadf6c2f3b SHA-1: 6d3c4b3cb133bac09bc64fdd504998aba311667b SHA-256: 351ae9ce698b871d31b699acb85435c566d66936bba560bb707ea0851a84dba7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=backing+track+guitar+canon+rock'. This indicates a phishing or social engineering attempt to lure the user to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL. The presence of a large number of embedded links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious URL.

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=backing+track+guitar+canon+rock
    • http://files.tassaace01.com/uploads/1/3/2/7/132740930/vamiwibogi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/nmp_coliformes_en_alimentos.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/43353378147.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/34671951856.pdf
    • https://cdn.shopify.com/s/files/1/0437/6949/5710/files/43703933831.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/gupox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/gutudub.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/78547307125.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/77616799161.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/15290728610.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/34059518609.pdf
    • https://cdn.shopify.com/s/files/1/0434/5813/4182/files/66059867637.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_off00004d2f.bin
94f2aa6cdd432d83cd0a7ae8c33d0af74b1fa924035967268017514ed748618e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2F 4632 bytes
font_01_sfnt_off00005cf4.bin
9473c86be47c15c085fe8bc58660ffb89a051a42d205358f81e3f1cd910a0703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 10088 bytes
font_02_sfnt_off00007f7c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 4324 bytes

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