Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6feb1aef586a88…

MALICIOUS

PDF

47.0 KB Created: 2020-08-10 21:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0f16f41a226b90c8a6a8c4a68377284 SHA-1: b1babf3a9f3986016ce43a18aacc0dbd42d31999 SHA-256: 4f6feb1aef586a88b9854cf16a98d18d0278bdbc039ca8badc0f84bba0088d85
128 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, characteristic of a link farm designed for SEO manipulation and potentially malicious redirection. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=bleak+house+pdf+free+download', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to the 'Bleak House' title and download prompts, suggesting a lure to trick users into clicking malicious links. No scripts were extracted, but the PDF structure and URL analysis strongly indicate a phishing or malware distribution attempt.

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=bleak+house+pdf+free+download
    • http://marurir.mathiasecology.com/uploads/1/3/0/8/130814328/vurananobilibamivom.pdf
    • http://files.pearldeangarden.com/uploads/1/3/0/9/130969312/norekom.pdf
    • http://files.dae-gaflow.com/uploads/1/3/1/6/131606260/2264385.pdf
    • http://files.inhizprezzence.com/uploads/1/3/2/6/132696030/6ec87a5cf4a6.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/datenara.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/66612886640.pdf
    • https://cdn.shopify.com/s/files/1/0437/6772/6232/files/propiedades_del_salvado_de_trigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/3002254768.pdf
    • https://cdn.shopify.com/s/files/1/0449/3407/0440/files/bwv_1004_gigue.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6757/files/83480725468.pdf
    • https://cdn.shopify.com/s/files/1/0452/4598/9026/files/cctv_installation_tools.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/lepowegivodit.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/70982419391.pdf
    • https://cdn.shopify.com/s/files/1/0433/7627/9702/files/22648589605.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1277/files/fogukawadap.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/occupational_health_and_safety_act_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/kudulofoduko.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_off000064d0.bin
05bb237b837e016bccb8bd7b33ae5e8d65c34f59abd2d7ab56433eea84322e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 6280 bytes
font_01_sfnt_off00007a42.bin
e5e03a45b55dbaae5c94fdaf64c10e9e27648ed8ad62349cd0f4c339e9027424		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A42 5336 bytes
font_02_sfnt_off00008c6d.bin
f87844fe92f144a293f2ec6268c0403b66d6ef8a255edea3bbc490691f83c700		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6D 9968 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.