Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94c6b0bae79796b…

MALICIOUS

PDF

50.7 KB Created: 2020-08-26 07:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7517d69df49c86b8cf403de834284325 SHA-1: df34bf8f739ca801c9cd0801a2e45e79b430040a SHA-256: e94c6b0bae79796bd6b9b58151f2087b8509707d02ec62304c7db5cd4ee0c69d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a book title. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious PDF. No scripts were extracted from this sample.

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=fundamentals+of+phonetics+3rd+editio
    • http://vodekanat.ritchandyvette.com/uploads/1/3/1/6/131636668/xotofavologovewix.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/dikopigasokarotatikapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/51511950011.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/98338310348.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/animated_pictures_free_powerpoint.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/88655612908.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/charleston_county_sheriff_s_office_inmate_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/25817188838.pdf
    • https://cdn.shopify.com/s/files/1/0431/7626/3841/files/difelalorik.pdf
    • https://cdn.shopify.com/s/files/1/0434/3001/9237/files/xujeve.pdf
    • https://cdn.shopify.com/s/files/1/0446/1946/4867/files/cuento_bienvenido_bob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/histoire_de_l_apiculture.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_off00006861.bin
dad4d61073c84d84aff0302f1fcff6fc4417919d7c4282e1780c122d038ada3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5512 bytes
font_01_sfnt_off00007af3.bin
6f43ad3c50c58660d82b9554e5445adaa144e97031c737bfd6f813b926c7a222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF3 14724 bytes
font_02_sfnt_off0000a8b9.bin
99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B9 16060 bytes

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