Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c359a496b41a1f…

MALICIOUS

PDF

44.8 KB Created: 2020-07-12 09:12:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 005ce9d39da22e124b8589ad2733861b SHA-1: bf953974bb497cf74c80e3cfe2a22267a4e03517 SHA-256: f3c359a496b41a1f850428165b9d6e8adbbd619bd56c9c4551101f43728f6b23
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL and other PDF links, suggesting a lure to external content. The primary malicious intent appears to be redirecting the user to the ttraff.com domain, likely for further exploitation or phishing.

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=se+rep%25C3%25A9rer+sur+un+quadrillage+ce2
    • http://files.gaindetalks.com/uploads/1/3/0/8/130874629/dojoja-kefuzegomoli-wadab.pdf
    • http://files.mccoyagency.com/uploads/1/3/1/8/131872054/5927881.pdf
    • http://files.bfgcommercial.com/uploads/1/3/0/9/130969874/niwenuve-nolizerizeg-ledifotuximisi.pdf
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130813797/a7f99.pdf
    • https://fosapab.files.wordpress.com/2020/06/65781328631.pdf
    • https://togelejamubo.files.wordpress.com/2020/06/82378129208.pdf
    • https://sejidinaduk.files.wordpress.com/2020/07/73456495155.pdf
    • https://gukubulori.files.wordpress.com/2020/06/tubosadevupib.pdf
    • https://fulivamata.files.wordpress.com/2020/06/vozupeta.pdf
    • https://wubefeb.files.wordpress.com/2020/06/giboxavogaludasasukarow.pdf
    • https://disosilawube351438687.files.wordpress.com/2020/06/pisenemiledowipuzata.pdf
    • https://guwasuxumoz.files.wordpress.com/2020/07/34704174826.pdf
    • https://zixakexixo.files.wordpress.com/2020/06/migitukiwixaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/89220936791.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/vuzajewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93867881616.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/bolenokelij.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/23596033832.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/4767428831.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/pozukosukuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/46844268202.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_off0000575b.bin
075ad68aa20d71e4c47f8bbf7bbe6175a6af286a1c2462915064b8ac3239ba0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x575B 5436 bytes
font_01_sfnt_off00006980.bin
137d67dd2662b8afccb3860ea85920929322d556d3141199a8aeec2a2523c3b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6980 11248 bytes
font_02_sfnt_off00008ddd.bin
b5ce1d064fee4832bde3bd34a9e17d2f5863a8d67282b88d5686ca026d844988
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDD 16328 bytes