Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05c6a57eb8f2c44…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 10:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 075bf2da64b1283573ca24f24e29553c SHA-1: 391b928300529852fa6aac36da66301926279df0 SHA-256: c05c6a57eb8f2c445037a2857aff475814514464c7dc71691d47e139e8f8ef82
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the URL and appears to be a lure for technical information. The presence of numerous other links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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.cc/pify?keyword=stepper+motor+basics+pdf
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdf
    • http://files.buckleyscatering.com/uploads/1/3/0/7/130775825/pexowunuwus_xumino.pdf
    • http://files.lifestyleofthebeliever.org/uploads/1/3/1/4/131455543/nejixufowav-namow.pdf
    • http://pobosem.southdakotaagriculturallaboratories.com/uploads/1/3/1/3/131384281/2893987.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/mekanism_joules_to_rf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/retepemaxugifelajirewaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/understanding_business_organisations.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vujunuvitiwowus.pdf
    • https://cdn.shopify.com/s/files/1/0440/8904/9238/files/misoxonoselegoxilu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/kexidogumotifakosuxem.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/10960716704.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7933/files/zirurujokejedojizarunuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/soriledazivupol.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_off000069f2.bin
3acd0f5a88bc1826ec4d8590f46a3ad3dc2afe4368ca7e6d5eb2a4bffe32cc24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F2 5512 bytes
font_01_sfnt_off00007c91.bin
a022d4316db79d064a46cad9faa6ed7812592f3bc2a3dd3dd7e0f9718c8e13c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 10172 bytes

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