Malicious PDF — malware analysis report

Static analysis result for SHA-256 bff1ad4563d5161f…

MALICIOUS

PDF

55.9 KB Created: 2020-08-10 01:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67c22b7384b300fd55568690cd3010e3 SHA-1: 4d4fe5708032f3744f29db9a7c163d7bc3c5bc4f SHA-256: bff1ad4563d5161fe30da51b602f5454be76ab1368838df87c386adafd2c6676
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that is part of a link farm, suggesting a phishing or malware distribution attempt. The document body itself is heavily obfuscated but contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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=protected+areas+in+the+world+pdf
    • http://files.torontoallergygroup.com/uploads/1/3/2/6/132682564/lesufiduxap_pozakerex.pdf
    • http://files.capsulate.life/uploads/1/3/1/4/131482832/sepajetekava.pdf
    • http://files.hardycoaching.com/uploads/1/3/0/8/130874338/8177680.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/95430402152.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/90229343526.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32505595602.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/magic_armor_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/water_operator_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/lisuluvad.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/4976414336.pdf
    • https://cdn.shopify.com/s/files/1/0435/9602/1919/files/butlers_pizza_menu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8227/6257/files/bosque_tropical_seco_costa_rica.pdf
    • https://cdn.shopify.com/s/files/1/0432/3504/9640/files/aircraft_conceptual_design_raymer.pdf
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/dazizetovinoriverapikejez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9204741539.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/lanuxadesuwakoxuxu.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_off00009baa.bin
169248b11ea4fdb02aba64ed2ba8446fd6b133383abbc5e2ad5d4faf7ea5cfcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAA 5336 bytes
font_01_sfnt_off0000addc.bin
4ae2a0d2aa4a13c6009766cc9a0ab54a22833bc9902daccc1dc9db6af6b5ffcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADDC 10688 bytes

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