Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50275adc3628140…

MALICIOUS

PDF

46.0 KB Created: 2020-08-01 03:35:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40cdab166e903e9b5d83ad6b4fd0058a SHA-1: d9716703854d938a42a621a421886f0f0a0317bb SHA-256: a50275adc362814073c0b0d94e13428893fdaf3163a7bfb4592b08ff07def284
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'https://ttraff.com/pify?keyword=the+respect+principle+pdf+free'. This indicates a social engineering lure, likely aiming to direct users to malicious content or phishing pages. The document body, though heavily obfuscated, contains the same redirector URL and other benign-looking Shopify links, suggesting a link farm or SEO poisoning tactic to attract victims. No scripts were extracted, but the primary malicious activity is the redirection via embedded URLs.

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=the+respect+principle+pdf+free
    • http://files.joshuaspringsschools.com/uploads/1/3/1/4/131483108/bolemijakuwobok.pdf
    • http://files.sarabycura.com/uploads/1/3/1/4/131407887/212c9665.pdf
    • http://files.thecandlewasters.com/uploads/1/3/1/4/131437312/nufidajonijufi.pdf
    • http://files.thewaveindustries.com/uploads/1/3/1/4/131413837/a1b902b2.pdf
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/73057041585.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/suxolurojalevu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/54150461009.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/wexomojipa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4086/4421/files/64398556258.pdf
    • https://cdn.shopify.com/s/files/1/0433/6517/1354/files/95606395155.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/gizukuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7844/files/lenewaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/18679695660.pdf
    • https://cdn.shopify.com/s/files/1/0441/3263/0680/files/pufisalidaxobogomemabeso.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/pijusafipowarosotu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0213/files/18436636566.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_off0000772b.bin
731bc141f81fd509fe3b066ce8e9fb86636f52f8ad382b40009449132d2b970e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772B 4984 bytes
font_01_sfnt_off0000881b.bin
e2771086acd27651598a4f3d746809f283d7245b29e178ebc98af76f26524c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881B 10416 bytes

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