Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5b0eed8c1237954…

MALICIOUS

PDF

42.3 KB Created: 2020-08-18 22:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072599b36e807f6cdc6be577fd48c4f7 SHA-1: 7c2f5756c32a8584d5df6ff843623afa93394e0b SHA-256: c5b0eed8c123795490795fafd56c312493e41550c9dd7fc17910106db6052fb1
150 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 pointing to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify-hosted PDF. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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.com/pify?keyword=wow+wotlk+rogue+lockpicking+guide
    • http://files.isiswellnessbar.com/uploads/1/3/0/7/130738870/xesivemodebox-lafos.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/zegojelemap.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/centralization_definition.pdf
    • https://cdn.shopify.com/s/files/1/0438/2454/5949/files/65110692435.pdf
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/24687927100.pdf
    • https://cdn.shopify.com/s/files/1/0434/4781/2248/files/96245600302.pdf
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/workforce_development_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0433/3305/8715/files/pibaxibumojaxekabur.pdf
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/ramobofokuxotob.pdf
    • https://cdn.shopify.com/s/files/1/0434/1625/6662/files/apostila_de_calculo_de_caldeiraria.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8522/files/zufozuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/57512406861.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/advantages_of_logical_framework.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_off0000649d.bin
c16f415703db6f2086e6fe1cdd05065126cf3969037db667e6e8b1cbea02064a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649D 5024 bytes
font_01_sfnt_off000075e2.bin
9d870f59bb801991a36329fe16e8ef6667fe218e0f586cfd1fd431904cd27664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 12056 bytes

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