Malicious PDF — malware analysis report

Static analysis result for SHA-256 a864f32a6ced371e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-15 07:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b91224cb155cd626174e6b6b79845d3c SHA-1: eff75e023e606db5f7979453eb05df025d93be69 SHA-256: a864f32a6ced371ed14b8e063d32297330a581617246f8375fc92ecccfa424f6
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used to obscure malicious intent. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=wapking+punjabi+video+song++hd', which is also flagged as malicious. This suggests the document's primary purpose is to redirect users to harmful content.

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.ru/pify?keyword=wapking+punjabi+video+song++hd
    • http://xezavoz.sunreyes.org/uploads/1/3/1/0/131070152/2186820.pdf
    • http://gepuxu.pollypanda.com/uploads/1/3/1/6/131637136/9c9c3198dfd477a.pdf
    • http://files.howtocookweirdly.com/uploads/1/3/0/7/130738603/2802834.pdf
    • http://files.pocketwinemaker.com/uploads/1/3/2/6/132682338/kelosofatofemitakoji.pdf
    • http://giwoniv.nanoteacher.org/uploads/1/3/2/6/132695492/giterojekukidi-sasukajebiz-pulufovalapalil.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/16797609135.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/az_900t01_a_microsoft_azure_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0437/5399/6446/files/kitexazuditolebalav.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/pemuworulixalajiwopisak.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/leadership_styles_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/pulse_width_modulated_dc_dc_converters.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/nupugadig.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/2_bestanden_samenvoegen_adobe_reader.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/mimipalibina.pdf
    • https://cdn.shopify.com/s/files/1/0434/8225/1421/files/fovepixidafomedifedoxagox.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/56946644688.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_off000069b3.bin
496c7aaeffa02168342b80fd816c238da7d9c11cc9eb1b67ff4bad4cc1cdfa14
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 5448 bytes
font_01_sfnt_off00007c42.bin
10b5a7b90ddc906984ff14ab2e8e070d8d0a01059eadd5f6e86115035f9c6ad7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C42 10408 bytes