Malicious PDF — malware analysis report

Static analysis result for SHA-256 987c160883bc211e…

MALICIOUS

PDF

45.9 KB Created: 2020-09-17 22:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad9aed8c31fb8350f255ac30e5087d89 SHA-1: dd3580e4619115a34d2191ba1e60642f93428242 SHA-256: 987c160883bc211ec2a86af6b74116a6eab8de588bcdcc3a54422ab3e58d4126
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as content related to an 'Irwin door lock installation kit video'. This link, 'https://ttraff.me/wix?keyword=irwin+door+lock+installation+kit+video', is flagged as malicious and likely leads to a phishing page or malware download. The document also functions as a link farm, pointing to numerous other PDFs, some hosted on Shopify, which is a tactic to obscure the malicious intent and potentially improve search engine ranking for malicious content. The presence of a callback lure suggests a potential for social engineering to extract further information or payment.

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.me/wix?keyword=irwin+door+lock+installation+kit+video
    • https://cdn.shopify.com/s/files/1/0429/0704/1959/files/lava_loua_brastemp_8_servicos_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3716/2646/files/98153031452.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7581/files/27389906325.pdf
    • https://521f56fa-9b3a-4a6c-b109-373e610cb248.filesusr.com/ugd/769f78_ed3b3b6eb56f42f79e4e5d46b9c39ca7.pdf?index=true
    • https://037d37f5-2d30-4b47-91dd-cecb9ff8cb5f.filesusr.com/ugd/440e29_9d8d3a0dbe6a42ca962d4875774f1977.pdf?index=true
    • https://eecef4a0-cca5-4d6e-8a5e-69695572817a.filesusr.com/ugd/a42eed_b970e733452247d1977592f724bd58ec.pdf?index=true
    • https://7680d92c-29c3-4b5e-85ea-5cbc27b13a9c.filesusr.com/ugd/43d598_ab3a455c57ba4c9c83533a2205398b8b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/rubewijogesamonavurires.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdf
    • https://cdn.shopify.com/s/files/1/0435/2661/9287/files/figuras_tridimensionais_e_planifica.pdf
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/nuxuvovilisewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/26314008758.pdf
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/merge_files_with_acrobat_reader_dc.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/75791899833.pdf
    • https://cdn.shopify.com/s/files/1/0454/5187/0358/files/campbell_biology_second_canadian_edition_free.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_off0000733d.bin
55d1af4d8325fb5b077546eb1aafac7c408fd411194a01ba1502425175ea6aa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 5084 bytes
font_01_sfnt_off000084b3.bin
423f063d720d4dd09ff5eef06f05dd5fac6a3d6c05ed059358c37d9973e0a72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B3 10800 bytes

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