Malicious PDF — malware analysis report

Static analysis result for SHA-256 536f7c09570d09d5…

MALICIOUS

PDF

38.9 KB Created: 2020-08-23 23:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b2debc0d3398b61f5cf7adb4e492566 SHA-1: 3822474ffe05af494902556cbaab028a970879ce SHA-256: 536f7c09570d09d58bf3bf5e923f4dba500db9b9bc54cf5c23aec1e5aa559355
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link (https://ttraff.cc/pify?keyword=report+cribis+advisor) and a mass of external PDF links, indicating a link farm designed to attract traffic. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a callback phishing lure heuristic further suggests a social engineering attempt to trick the user into interacting with malicious content or infrastructure.

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.cc/pify?keyword=report+cribis+advisor
    • http://botilelis.offthestreetfoodfest.com/uploads/1/3/1/4/131453541/zazagoloxifupum.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/2014_town_and_country_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/79121833640.pdf
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/zematomopagezofadosuvavip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9737/5399/files/xowibefujulenonug.pdf
    • https://cdn.shopify.com/s/files/1/0434/2343/2854/files/gatineau_park_summer_trail_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/60053927730.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/fafaxisanejasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/12681395174.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/gipidabotobanaxafumidufa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005893.bin
ec0419f29018ff4958f26bb0644c819abb6a966de4593d86a16905616bed383e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5893 5244 bytes
font_01_sfnt_off00006a79.bin
7b09b7bcd7a626ae2c4125a9f2f669d26132155459cb6b4dcef1445c687d0896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A79 10652 bytes

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