Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f5b599b61d440d…

MALICIOUS

PDF

37.7 KB Created: 2020-08-17 05:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 446dd296ebe10e1f79f4f048eb9d4ed3 SHA-1: c81b119615239b3212c85b13e82594d7ffd820ec SHA-256: e7f5b599b61d440d3cef535cad98f9b8ceec1a27f14c4b9fc7fab5ee6c12e2f4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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=seasons+and+ecliptic+simulator+worksheet
    • http://files.nickgiamarino.com/uploads/1/3/1/8/131856725/a33785.pdf
    • http://gudozig.northwestpermaculture.org/uploads/1/3/1/3/131379636/zubelitoragemen.pdf
    • http://wakelupu.snapdragonphotographymd.com/uploads/1/3/0/7/130776330/d86965db609f6.pdf
    • http://wikeber.baselimmunology.com/uploads/1/3/0/7/130776487/0fadb56.pdf
    • http://zuwoma.clareannmatz.com/uploads/1/3/0/7/130740596/1017840.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/amma_photos_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/canon_in_d_piano_and_violin_duet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/early_transcendentals_8th_edition_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/nogupos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xijixevaxuxowowifibu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/zuzakofedopubivabokiriwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/divot.pdf
    • https://cdn.shopify.com/s/files/1/0440/7836/6885/files/5664049180.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/2953202282.pdf
    • https://cdn.shopify.com/s/files/1/0428/1905/9868/files/95084003842.pdf
    • https://cdn.shopify.com/s/files/1/0434/2163/0631/files/decision_tree_template_word_2013.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/60298742116.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/the_practice_of_public_relations_11th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/kovoromizixito.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/
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/the_practice_of_public_relations_11th_edit

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005643.bin
17e7f81ba1f4889b9e89fc310080c3082d08c34c82231dbe7dc3a1270d727c2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5643 5572 bytes
font_01_sfnt_off00006910.bin
26673b4f5d874faf3c88f200f38a0fc3120f330f9f6e9cbbcf353e918f95ce49
pdf-font-stream PDF embedded font (sfnt) at offset 0x6910 9564 bytes