Malicious PDF — malware analysis report

Static analysis result for SHA-256 23234068ac06c694…

MALICIOUS

PDF

37.8 KB Created: 2020-08-08 11:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942d830fcd1c12f98cd640db87a0689c SHA-1: 629046f107a18065303fde154a05885c1ba1a035 SHA-256: 23234068ac06c694d1b1ca1d4db03ba4534d75da8473db2e8eafde95a8d8dc49
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains or redirectors. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains a reference to the same suspicious URL. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content.

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.cc/pify?keyword=diccionario+cambridge+ingles+pdf
    • http://files.partnersinrelief.com/uploads/1/3/1/6/131606822/9d15a.pdf
    • http://files.trashministry.com/uploads/1/3/0/7/130775596/biwevazode.pdf
    • http://files.timelessvoicesohio.com/uploads/1/3/1/3/131380889/bawebu.pdf
    • http://tobera.rubiesgirlsclubs.com/uploads/1/3/1/4/131407241/7128967.pdf
    • http://files.companychowfoodjunkies.net/uploads/1/3/1/3/131398292/xopixivakor.pdf
    • https://cdn.shopify.com/s/files/1/0434/6026/4086/files/fundamental_astronomy_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1998/files/80690145343.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/rise_to_ruins_cheat_engine.pdf
    • https://cdn.shopify.com/s/files/1/0445/9390/5828/files/unity_remove_component.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/99991931636.pdf
    • https://cdn.shopify.com/s/files/1/0431/3317/3927/files/osama_bin_laden_biography_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/68300389489.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokixud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/sexozomisudijetijasapok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/4536167767.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/xediwarotufavixaxete.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_off0000548c.bin
86e8cc9025212e6896db6e2a2f536f3a8b2aac23962dbb35f67856a9cdf1cbb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548C 5612 bytes
font_01_sfnt_off0000678a.bin
8a43542f9d7b395f01141d4d61402e0311ebf54220a1c28734e2e9ccae8641e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678A 10268 bytes

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