Malicious PDF — malware analysis report

Static analysis result for SHA-256 791a0056c0e2eaf8…

MALICIOUS

PDF

26.0 KB Created: 2020-11-01 01:06:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1aafe0bd59b795eefe42c8a93fc167f SHA-1: 7a60e32e1e9bca3aab3a45e9279902e12b5944e8 SHA-256: 791a0056c0e2eaf81d1424ccf1a963589261c718169a3e77dd8ba7a84e68e1c2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://gettraff.ru/aws?keyword=magicjack+apk+mod'. This heuristic firing, combined with the ML classifier's high confidence, indicates the document is designed to lure users to malicious sites. No scripts were extracted, but the presence of malicious links is sufficient evidence for a high confidence assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 2

  • 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.
  • 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://gettraff.ru/aws?keyword=magicjack+apk+mod
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/lupovopuba.pdf
    • https://lakujasoramaw.weebly.com/uploads/1/3/4/4/134400634/3088617.pdf
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/9681255.pdf
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/womakofataxope_domupagukujorip_xufepagofaluda.pdf
    • https://tetikofigutuda.weebly.com/uploads/1/3/4/4/134445118/85ae33ddb8c7c.pdf
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f9697cec0a82.pdf
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/1185260.pdf
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/jodajatazupeva_guwib_jipuvekojiwoxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gavexilatuvitaz/67584825703.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/adjektivdeklination_test.pdf
    • https://s3.amazonaws.com/jamokaroxoj/89492035208.pdf
    • https://s3.amazonaws.com/webipejonavuv/vadifumunawuxerotapivi.pdf
    • https://cdn.shopify.com/s/files/1/0499/4272/4759/files/types_of_welding.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a22.bin
5c47bb740992916da652949d71f376d2ed859fc5429ae4faf77ffd11011ea380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A22 5232 bytes

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