Malicious PDF — malware analysis report

Static analysis result for SHA-256 36cb2d50b102737c…

MALICIOUS

PDF

41.9 KB Created: 2020-09-02 02:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b58b2f100b83129ec61fc5b581f10e7 SHA-1: 3498ae2b8d0ca5ea43be761d3fea96d0829c951e SHA-256: 36cb2d50b102737c2a9a031ac8dd6227ca99f2642f6ef1e77b2a3d13cfffa6b7
140 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as 'American express contact information' which redirects to a malicious domain. Additionally, the document exhibits characteristics of a link farm, embedding numerous other PDF links, likely for SEO manipulation or to host further malicious content. The presence of a callback lure heuristic suggests a potential for social engineering to extract sensitive information.

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.link/wix?keyword=american+express+contact+information
    • https://cdn.shopify.com/s/files/1/0429/8145/8069/files/87267481352.pdf
    • https://cdn.shopify.com/s/files/1/0460/1230/1479/files/bally_sagoo_all_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/relaxing_piano_music.pdf
    • https://cdn.shopify.com/s/files/1/0461/1476/7012/files/nifagisomezavowox.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/95084362510.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/superlative_adjectives_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/36853211515.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/24303002687.pdf
    • https://cdn.shopify.com/s/files/1/0438/6396/5861/files/51467240337.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/a_soul_s_bane_osrs.pdf
    • https://static.usrfiles.com/ugd/3e9e83_2649fc8ddde64b1ab87bed62712ee797.pdf
    • https://static.usrfiles.com/ugd/1a89c8_bc59a4d3b5cd44b5b269d14c0f741e56.pdf
    • https://static.usrfiles.com/ugd/6116da_cda40c3c8de24d5798cc5d0e0e854da4.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_off00005f81.bin
6d79051c66ac2095ae04cc5d1e1f8a6e2bafb9a6d690bcbfa9b4fefce148de45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 5188 bytes
font_01_sfnt_off00007113.bin
cbc1c8f46a7034c963d04af2b599b7f4a771d2d9ea61da5bc96856ccb37db8cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7113 13004 bytes

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