Malicious PDF — malware analysis report

Static analysis result for SHA-256 c492e9463a6010ce…

MALICIOUS

PDF

77.0 KB Created: 2020-10-31 05:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e068f1be5ca7a2d09dad29c1e8dc7225 SHA-1: 707194551aeb2fe3147dc4d6c1cdec28bb416b9c SHA-256: c492e9463a6010ce1209c83546fdff66c381073215fc5674c67894cbc9142909
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.cc/123?keyword=sportcraft+dartboard+69464+manual. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/123?keyword=sportcraft+dartboard+69464+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f9c9076484dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_5f9665b38445a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369671/normal_5f880d68684b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9263/8403/files/vuvipevipezodovikera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3543/3882/files/finale_2020.5_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8887/8004/files/naloxaxesanas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9126/2123/files/venelaxonalazezonijuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1489/3980/files/kajope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97af43a2-9cdb-4ac8-bd24-cf0c445496ab/18355003817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bda644-94bd-4ab8-85b7-b45f5fd7f68a/31852955329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9155/6031/files/jevobuwix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/7563618294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3777/6289/files/35642421073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8062/0467/files/tamilnadu_nativity_certificate.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDC 5480 bytes
SHA-256: 6609e1201845989963ca30ff1f6ef44d784ae0e5ec32aceea926cac13f661140
font_01_sfnt_off0000ef57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF57 12448 bytes
SHA-256: 5de466ec58a0c1eca526b05dab50f6e8427fe9204bc92cbe2814c449e3866800
font_02_sfnt_off000118eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118EB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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