Malicious PDF — malware analysis report

Static analysis result for SHA-256 79e6d14dcaeb6920…

MALICIOUS

PDF

67.5 KB Created: 2020-08-30 19:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e8fc17447b4b48c7e60347278da3dd0 SHA-1: 8f6f795ad85c83b4168be5090d776fddd5e5334f SHA-256: 79e6d14dcaeb69207a64613759e294cac9909bd47fd792155a1386ccaf033cd6
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.com', which is flagged as malicious. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, suggesting a potential attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious.

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.com/wix?keyword=design+of+analog+cmos+integrated+cir
    • https://cdn.shopify.com/s/files/1/0433/4016/9374/files/ioccg_report_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/powerpoint_templates_2018_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/24404034350.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/bodaxujaxusesibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/zaremukuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/0502/4168/files/34657848581.pdf
    • https://cdn.shopify.com/s/files/1/0445/2994/2687/files/altair_4xr_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5300/7516/files/zuvawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2964/files/darksiderg_new_server.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/zujujivunazoto.pdf
    • https://cdn.shopify.com/s/files/1/0434/0426/3585/files/cover_page_design_for_internship_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/ziviroxaluteke.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/97941951555.pdf
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/vekudizigabajagozolujijak.pdf
    • https://cdn.shopify.com/s/files/1/0466/3217/3733/files/raravepelurerawunifovaj.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_off0000cc62.bin
bfcbe11230d4cb76d8f5f108ac279509a98284998a96b09e0c5a7858903a1474		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC62 5340 bytes
font_01_sfnt_off0000de6f.bin
b22f9fbd2c2ab9af9fb3eac82b82960f572f361deba13ef7f098b5a2a7028d80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6F 9972 bytes

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