Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7fd14726850127…

MALICIOUS

PDF

43.4 KB Created: 2020-08-08 21:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e003b3b1eda7a329748577554c4f849 SHA-1: b26b87535a18e525c79e011172ccb5f6c57b5381 SHA-256: dc7fd1472685012737416b8f28c427f907ab719c7effddd163c051e1fa268fb8
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a link farm, indicating an attempt to lure users to malicious infrastructure. The presence of a 'download button' heuristic further supports this. The document body contains the URL 'https://ttraff.ru/pify?keyword=adobe+pdf+converter+to+word', which is a known malicious redirector. The file also contains numerous links to PDFs hosted on Shopify, with one identified as part of a link farm.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe+pdf+converter+to+word
    • http://wokiti.hunterwrestling.com/uploads/1/3/0/8/130874359/xozojuzaz.pdf
    • http://files.kz-intl.com/uploads/1/3/1/8/131871625/deredarejitemu.pdf
    • http://files.rebeccafarleyphotography.com/uploads/1/3/1/4/131437396/putaximo.pdf
    • http://files.emeraldcitydarts.org/uploads/1/3/1/4/131438464/30b71d80.pdf
    • http://zenan.itreasuresandiego.com/uploads/1/3/1/0/131070792/e0f1ebd6c0bf51f.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/5165266391.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/bixaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/pierre_bourdieu_outline_of_a_theory_of_practice.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/pugasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/puguxivu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/hackerrank_python_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/leruwukirurubev.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/tovoloto.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/38562988165.pdf
    • https://cdn.shopify.com/s/files/1/0440/7279/6325/files/xebogizilagum.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/anemia_ferropenica_tesis.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/79381321339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/3106829228.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_off000060c3.bin
620d1a5bf411451d7bfba88f383857b469d45a71ceaf99a3ab93d49b21873b0f
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C3 4748 bytes
font_01_sfnt_off000070f5.bin
dd226061ff1feb93abc49e4e60d1fb1c016ffc62a22b7bb57652faa83780d58b
pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 9748 bytes
font_02_sfnt_off00009241.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9241 4324 bytes