Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71a8d6be8429ca1…

MALICIOUS

PDF

59.7 KB Created: 2020-08-21 14:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc8276bbff2b7ac3bc3eb3a76249dbf SHA-1: b33e4fa64c3ae924e1af90b37583009c72124fdf SHA-256: e71a8d6be8429ca1a94e2cf347f1f290014971653bb7a4873be163ed013f064f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=funky+town+drum+sheet+music'. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm designed to appear legitimate. The primary malicious intent appears to be redirecting the user to the ttraff.com domain, likely for further exploitation.

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=funky+town+drum+sheet+music
    • http://files.stclair-film.com/uploads/1/3/1/3/131383998/755b5d7.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8921/files/86107721894.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/89806060988.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/boost_converter_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/beautiful_life_goblin_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/alcoolisme_chronique.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/17782870250.pdf
    • https://cdn.shopify.com/s/files/1/0459/5456/4255/files/63340149046.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/48688341246.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/73250188720.pdf
    • https://cdn.shopify.com/s/files/1/0434/4191/4018/files/demande_d_attestation_de_salaire.pdf
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/37133551095.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000849e.bin
5f8907cfde646c84d0fc20dd0490323d1485d4821d5ccac87efce36d3ecc7340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849E 5148 bytes
font_01_sfnt_off00009616.bin
4712c6b813390617abcae6605adfaa5277b5c575879a3f14ea44c13461eae0cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9616 16772 bytes
font_02_sfnt_off0000ca58.bin
0bf397e83b3d1943fc2d7fa701f1052d8619ffe33fd16bc08e2d9f01316b5faa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA58 16292 bytes

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