Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7d70f8174ee6e0…

MALICIOUS

PDF

56.4 KB Created: 2020-08-18 19:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a30c54dd9715ef8a37d666be09f0c28b SHA-1: fa6756901f34f90f298e6a809d4b3d3f10537a9b SHA-256: 4f7d70f8174ee6e030a4fb0d168506622373072b2ab173da436453a6378a54cc
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This indicates the document is designed as a link farm to lure users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bhutan+travel+guide+best, which is likely used to obscure the final malicious destination.

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=bhutan+travel+guide+best
    • http://files.paulthiemann.com/uploads/1/3/1/6/131607407/fixoleka-nexifukagafakaz-pedawunaduxupov.pdf
    • http://files.myinternetpages.com/uploads/1/3/1/4/131453221/tebagoji_xorewabikol_rapozur_difuxedaxutesu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5741/3270/files/80784670627.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/bajufeworub.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/tezavoxagonis.pdf
    • https://cdn.shopify.com/s/files/1/0451/1848/8741/files/keysight_e4990a_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/64903872996.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7480/files/13376152823.pdf
    • https://cdn.shopify.com/s/files/1/0439/0889/0792/files/wazotivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6503/3383/files/ordinary_level_maths_notes.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_off00009ecf.bin
1a510b0f1a22bdeb3333f27a30ae4d55ce2e9f4c229c51b2bc85fa01b5cd7938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 5336 bytes
font_01_sfnt_off0000b0e3.bin
6cbab5a8236f7f11ea58b054a1bda8817f4f2fb2f1cb1838447c3c9844d54391		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E3 10720 bytes

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