Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e0f3c9218c7acb…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 00:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2a6388db94443e4010c65bcae97f6bc SHA-1: 3894dfa4245780619de1928f42d495d2c878e2bf SHA-256: f7e0f3c9218c7acbdccd502b3239949df34411c64bafce4e54b6c0d5e073fc87
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious indicator is a link to a known malicious redirector at 'ttraff.cc'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=classification+of+algae+by+lee+pdf
    • http://files.splendiferousart.com/uploads/1/3/0/9/130969441/c5b1ebb7c8f8cf2.pdf
    • http://reledatuk.furryzines.com/uploads/1/3/1/1/131163599/noxifuxug.pdf
    • http://files.whitemtncommunitycoop.com/uploads/1/3/1/4/131437683/xatezofutexas.pdf
    • http://vupuvami.patapscomusic.com/uploads/1/3/1/3/131398140/81e40c90.pdf
    • http://files.communitychristianaugusta.com/uploads/1/3/0/7/130775649/a39153d5a.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/41215304538.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/95920082155.pdf
    • https://cdn.shopify.com/s/files/1/0431/8717/5588/files/givus.pdf
    • https://cdn.shopify.com/s/files/1/0438/5934/5573/files/how_to_type_italics_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/44351247369.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/wosujoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/general_chemistry_lab_manual_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdf
    • https://cdn.shopify.com/s/files/1/0433/3492/6495/files/48701464471.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/kokuwurufesik.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/99293819820.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/unom_ac_asc_curriculum_design_and_development.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_off000071ef.bin
4115a578154c66019c613ba0fa26d9995ac4fe01464af8d9c5b99de75a3a2231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 5372 bytes
font_01_sfnt_off0000844d.bin
bb10284fb06a300e92df73656b825ef20da41f7336c499bbaa3122e925e28b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x844D 11052 bytes

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