Malicious PDF — malware analysis report

Static analysis result for SHA-256 50c536f39e3bd591…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 14:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed62d1e4f363ae599548d14bb8a3d173 SHA-1: 532ff442df56e93dfb2888c8e3057cb7b164c254 SHA-256: 50c536f39e3bd591f573c33c126e343d61ae6d2850056151906d2bb7eb5e7c5f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link to 'ttraff.com', which is flagged as a malicious redirector. The document body, though partially garbled, contains text related to 'China visa application form philippines 2019', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to attract traffic. The heuristic 'SE_CALLBACK_LURE' further supports a phishing or scam pretext, likely aiming to trick users into clicking the malicious link.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=china+visa+application+form+philippines+2019
    • http://toparik.tammylynnhenderson.com/uploads/1/3/1/0/131069934/kekov_xotulowuze_zadudiki_wemipulor.pdf
    • http://xodotaxu.naturenurturesparks.com/uploads/1/3/1/6/131607062/9167445.pdf
    • http://files.oltjp.com/uploads/1/3/1/3/131379904/2066433.pdf
    • http://xetirana.allamericandancefactory.com/uploads/1/3/0/8/130814397/rosakorokoxonaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/autocad_lisp_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2308/9307/files/28204109620.pdf
    • https://cdn.shopify.com/s/files/1/0438/1140/5986/files/31994381647.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/dc_msme_schemes.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/28325948729.pdf
    • https://cdn.shopify.com/s/files/1/0429/4675/6774/files/tutizo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/nupujawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/star_wars_destiny_character_list.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_off00006ee8.bin
b51e04b31f385d795cd9f65771881454676316f7cfca71834fcdc3d91dd7acb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE8 5700 bytes
font_01_sfnt_off00008229.bin
c8fd84e67ee85d0681c05988d17913953968932428e7f00bb090a53d57fad0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8229 10144 bytes

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