Malicious PDF — malware analysis report

Static analysis result for SHA-256 900334e71f2a619b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-23 00:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9458d08174c2fb867dd07f066350ebc SHA-1: 13b265292592213c07a3fe57cc270e75f9e79361 SHA-256: 900334e71f2a619b4c18503434efc53c34abfa9cf7c226239da4cd50e35db259
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a lure for "Acting tips in tamil pdf". This link, ttraff.com, is flagged as malicious and likely leads to further malicious content. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the true destination. 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.com/pify?keyword=acting+tips+in+tamil+pdf
    • http://genagomap.workinnvision.com/uploads/1/3/0/7/130776106/3fb48f9a321a.pdf
    • http://fovifepe.macbma.net/uploads/1/3/1/6/131606149/9fdf33d0e.pdf
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/giwefedak.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/niwalixetusagekaguj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/kogusorabigufegegapinikig.pdf
    • https://cdn.shopify.com/s/files/1/0435/2199/9008/files/arthashastra_project_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/daxetepixixajusozodes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92283418618.pdf
    • https://cdn.shopify.com/s/files/1/0431/6558/1468/files/nefizam.pdf
    • https://cdn.shopify.com/s/files/1/0436/8960/7321/files/beatless_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0454/0373/4184/files/list_of_international_airport_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/59168423577.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_off00006751.bin
f31555d95274377381b31663fa3eb42bdb8bd42d178668306d23805c66900b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6751 5368 bytes
font_01_sfnt_off00007984.bin
4c21e40c6a0ffe8578af3838df4bcbfe5dd98954f56e21fd332506ac94342cc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7984 10040 bytes

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