Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdfdc4d045d495a3…

MALICIOUS

PDF

32.4 KB Created: 2020-07-31 23:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a38fa64aaab262e275db9570fae2e6 SHA-1: e60fd9ca94f022481b2b81cc4ab02066938d9f64 SHA-256: bdfdc4d045d495a392a5e92d98d3e7d074e8fd5b9d2f0845a0a114e15940ae5d
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to its inclusion of a link farm containing numerous external links. One of these links, 'https://ttraff.cc/pify?keyword=thermodynamics%253A+an+engineering+approach+pdf', points to a known malicious redirector. The document body contains metadata and URLs, reinforcing the finding of a link farm designed to lure users to potentially harmful content.

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=thermodynamics%253A+an+engineering+approach+pdf
    • http://files.thenewportshow.org/uploads/1/3/1/6/131607943/4db7c5210.pdf
    • http://files.awpovrug.com/uploads/1/3/1/3/131379990/vuvubuvavitufir.pdf
    • http://files.brazil-yellow-virus.com/uploads/1/3/0/7/130775223/7818106.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/mivomeribok.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/bolano.pdf
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/25825140634.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/30361923744.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/gevow.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/2728827267.pdf
    • https://cdn.shopify.com/s/files/1/0431/9327/0429/files/paxojixoledusenewuvebepat.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/55503632582.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/mefibowipideval.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/56087654304.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vinujavezo.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_off00004285.bin
34a070c9b3d4f2f434b73d113a3d94758a2420e6bb270663de9e126474fee169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4285 5640 bytes
font_01_sfnt_off00005592.bin
3999f97ba80a5515596375fc0ab114b540dfd66aebd0b9f33bd42ccb10aa729a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5592 9048 bytes

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