Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf232e9074fdbc40…

MALICIOUS

PDF

47.2 KB Created: 2020-08-21 07:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8dd026c7cd65f03570887afaed542df SHA-1: 969dcda0a2db23ef929bf0682afc802891cb479a SHA-256: bf232e9074fdbc406a7ea6aaa168073d42b44d782171755655b93ba6f77ebfab
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=yamla+pagla+deewana+2018+song. This suggests the document is designed to lure users to malicious sites. The presence of numerous PDF links, many pointing to Shopify domains, indicates a link farm strategy to potentially improve search engine ranking for malicious content or to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=yamla+pagla+deewana+2018+song
    • http://files.pixelponyphotography.com/uploads/1/3/1/4/131408788/5640872.pdf
    • http://didaku.sebastopolredwoodhouse.com/uploads/1/3/1/3/131397987/jobotemi.pdf
    • http://vegulusix.ameliasherry.com/uploads/1/3/1/3/131379730/kejelebizogela.pdf
    • http://xupoges.wisdellshomes.com/uploads/1/3/2/6/132695471/5f001a7b29ed2.pdf
    • http://files.lizpearse.com/uploads/1/3/1/4/131437330/1d5dc29e8c55.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/factors_influencing_consumer_buying_behaviour_of_luxury_branded_goods.pdf
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/91635726789.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/php_delete_directory.pdf
    • https://cdn.shopify.com/s/files/1/0432/5205/6227/files/katavefegu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9344/9122/files/fafig.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/xedepalibiluxabokevilaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/rabojilasovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/nadulilobipis.pdf
    • https://cdn.shopify.com/s/files/1/0429/0890/9734/files/film_camera_shots.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/93659200424.pdf
    • https://cdn.shopify.com/s/files/1/0459/6206/8127/files/74984284793.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_off00006332.bin
d4b3ece30a19bfea9555e0b3b69d55f7becdcace265b3fdcb9efdbe24ea5d887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6332 5756 bytes
font_01_sfnt_off000076d4.bin
0b70b29bfd087e7fe51607fb0a3c93bbb50f6e30c426b0b6d9ced45d0152f20f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D4 10404 bytes
font_02_sfnt_off00009ab4.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB4 16164 bytes

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