Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2ea20d99b82230…

MALICIOUS

PDF

36.4 KB Created: 2020-08-14 09:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aafbbebe94b60b9abd27bafd6a8a0d60 SHA-1: 0b6b26789efc49a58339b3b3c46c26304c14d097 SHA-256: 8b2ea20d99b82230cfea5a59c1d1b32ad3bd32f2ef3dd7072ce7d0bba86c050d
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.ru', are indicative of a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links suggests a broad attempt to lure users to potentially harmful content.

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.ru/pify?keyword=chess+2+player+apk
    • http://files.johnpatrickhunter.com/uploads/1/3/0/7/130775342/9661875.pdf
    • http://xiludep.mcfcconference.com/uploads/1/3/0/7/130775320/saluk.pdf
    • http://zalugu.vickytrespando.com/uploads/1/3/2/7/132710797/3734246.pdf
    • http://files.madcitycrushsoftball.com/uploads/1/3/0/7/130775867/915b43ac6d6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
    • https://cdn.shopify.com/s/files/1/0440/4687/6837/files/soil_bulk_density_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/meaning_of_chaupai_sahib_paath_in_punjabi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/american_airlines_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/31928174428.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/fibawubexalunemizigib.pdf
    • https://cdn.shopify.com/s/files/1/0435/5119/5299/files/dodedojaxowodatuwimem.pdf
    • https://cdn.shopify.com/s/files/1/0438/6829/1227/files/design_thinking_empathize.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/vuxapilitaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/28006079268.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_off000051bc.bin
032d27fecf350f27b917aed61bcedeaf33e938d82daec141dc7cb7165109635c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51BC 5112 bytes
font_01_sfnt_off0000631c.bin
cfa679bb6c004a9fa9f0c4263fe98a9b27900a5c6bf0afaf4b46fff08d8b32ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631C 9988 bytes

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