Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe23c8aaa0d747e8…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 12:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 945695ad19b5322c8e88a62c6d034608 SHA-1: 44718750301c5187eb009a55b37d6cb255117f2c SHA-256: fe23c8aaa0d747e8ba13577d8625b293dfd86206c4c9b16fdb1a62a330ef06c7
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=financial+reporting+ca+final+study+material'. The document body, though heavily obfuscated, also contains this URL and references 'financial reporting ca final study material', suggesting a lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links. No scripts were extracted from this sample.

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=financial+reporting+ca+final+study+material
    • http://files.petemackool.com/uploads/1/3/0/8/130874010/wemujo.pdf
    • http://gineru.rivendellmeadows.com/uploads/1/3/1/1/131163635/873ec2dfe.pdf
    • http://files.offbeatmath.com/uploads/1/3/1/4/131452903/103da773bae06.pdf
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/totolilelusemurev.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/96310682030.pdf
    • https://cdn.shopify.com/s/files/1/0461/8459/5610/files/baaghi_2_movie_film.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/amigdalitis_bacteriana_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/lorumuwemeketibojozomudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/cheats_for_the_forest.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/git_add_existing_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/64408922365.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/stock_market_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/5e_grave_domain.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/71151015596.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_off00006322.bin
b3240a9cf4297f599d1bd4e6d07ff3b7226a569540a0325819620449f8b58b75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 5532 bytes
font_01_sfnt_off000075db.bin
80f76cec988e3f4b862662708603191c53660a767ee0b13b60fa612216cf89bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DB 10380 bytes

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