Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e46f2cc285aa2d…

MALICIOUS

PDF

129.5 KB Created: 2020-08-09 16:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46cb490508cac26e37009a3a36041249 SHA-1: 82ef731c9bdc40853eb9c7e83766668d7974d8c4 SHA-256: e8e46f2cc285aa2deb4e3be725e6bce8a1a7e4ef849e37da3407bfa1ba1ecf3a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=socialismo+comunismo+y+capitalismo+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary attack pattern involves luring the user to click the malicious link, which then redirects to a potentially harmful destination.

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.ru/pify?keyword=socialismo+comunismo+y+capitalismo+pdf
    • http://files.campbellbarnescounselling.com/uploads/1/3/0/8/130813526/3c8b0076.pdf
    • http://files.brooklynartgalleries.com/uploads/1/3/2/3/132302987/xogaked_rujisape.pdf
    • http://files.dreamalign.com/uploads/1/3/0/7/130739218/60c6a95997.pdf
    • http://files.cdcheboygan.org/uploads/1/3/1/4/131437765/fololedozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68736518606.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4785/files/bevezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/chemical_composition_of_biomass.pdf
    • https://cdn.shopify.com/s/files/1/0434/3218/1909/files/chennai_express_song_downloads.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taselalodomojobuda.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/adestrar_cachorro.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/66037234719.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/30_rock_pilot.pdf
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/wopugemagoxijamulujumusim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/77310815759.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_off0001b677.bin
2e92b888f70fb507d575eaaee5037bc7c63330f4a5b1102add5cc3dd605d3166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B677 5408 bytes
font_01_sfnt_off0001c8df.bin
6d6a4fa5c33cb971241da28e86c915182f2777fe3c2c8b2d7803fcf0c15f5f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C8DF 14784 bytes

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