Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4008455d6186fd4…

MALICIOUS

PDF

32.5 KB Created: 2020-08-20 12:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abfdafed5c8a53b3ba19b320ca3cdc40 SHA-1: 86e8c41fdc46258b3e6593a4532fc82a21e78cab SHA-256: f4008455d6186fd444379aae465b5ca0b2912344f030ae47791f0674332736ce
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=cg+new+holi+songs+free'. This indicates the document is designed to lure users to a potentially harmful destination. The presence of a PDF link farm further suggests a tactic 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.cc/pify?keyword=cg+new+holi+songs+free
    • http://jafigam.ccpartnersintl.com/uploads/1/3/1/3/131380158/7815881.pdf
    • http://xokew.zeitgeist-duo.de/uploads/1/3/1/8/131856772/89709ed.pdf
    • http://files.achschoral.com/uploads/1/3/0/7/130775055/zikifonumiwiji.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/saint_seiya_awakening_mu_cosmo_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/78996762908.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/the_biology_of_belief_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8782/1981/files/92452702088.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/vozimeto.pdf
    • https://cdn.shopify.com/s/files/1/0431/3471/4017/files/up_board_class_12_biology_practical_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/bruchrechnung_erklrung.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_off0000448b.bin
356f2a58a615e7837263852b3339ad0d588060cdb2e0885108341c6add635ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x448B 4816 bytes
font_01_sfnt_off000054fd.bin
ccb3ffe3a4d47d6a2d20768b8d3659af814aacc1a751664fd7a78be72be772b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FD 9580 bytes

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