Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bd055343983f98…

MALICIOUS

PDF

54.0 KB Created: 2020-08-14 02:11:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bc0c9f15609469d66585bd24df7fbbb SHA-1: 6268d2baa40f8ca5807f396f10554f76660fe760 SHA-256: 39bd055343983f98cabef42bdcfa14a02665217b76624293fc7f8422fd3c5cff
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 'ttraff.com'. This URL is embedded within the document body, disguised as a free song download. The PDF also exhibits a link farm behavior, with numerous external links, many pointing to Shopify domains, suggesting an attempt to distribute or obscure malicious content. The primary malicious IOC is the ttraff.com redirector.

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=amman+bakthi+song+free
    • http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.pdf
    • http://fijejus.anu-pola-architects.com/uploads/1/3/1/1/131164079/rugipara-vujaxadu.pdf
    • http://files.arosenthallcsw.com/uploads/1/3/2/6/132681322/3cc6a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/jobej.pdf
    • https://cdn.shopify.com/s/files/1/0444/5070/9671/files/cain_and_abel_packet_sniffer.pdf
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/2477453481.pdf
    • https://cdn.shopify.com/s/files/1/0434/2648/0295/files/97410383351.pdf
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/budatuletivubuxudor.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/wederumejum.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/adjective_worksheet_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/close_reader_collections_grade_8_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/reflection_refraction_worksheet.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_off00008faa.bin
e3ac8439505a2b627beb59d88a6144cbd0d44e927bce833c14cf91f151af01e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 5340 bytes
font_01_sfnt_off0000a1a9.bin
46d59c6c3cd66aa7f094554341a274745be554939b60a5fa5599d9ef1afb6060		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A9 13144 bytes

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