Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a14e165a23f468…

MALICIOUS

PDF

66.6 KB Created: 2020-11-22 18:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: abe902d7f37815ce7ca0ef5f92d6b62b SHA-1: 6e1334f7311a243836bc66d54e48340797d3aad6 SHA-256: f6a14e165a23f468bc49ce60f76d963b0ecab707ba7449b9eb7586a3dbd9ca1f
212 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to known malicious redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that this document is designed to direct users to potentially harmful websites. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, but the primary attack pattern involves redirecting users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9627

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/aws?utm_term=whatsapp++apple+mac In PDF document text
    • https://pareropifu.weebly.com/uploads/1/3/4/3/134349273/tiwegureg-mumudipajufomim-vodaxezinulafu-mixujux.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/mosinozivinaxon-rulubelimebejuj-wafonepigaze-detebewep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_5fa3a7beb9a20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f99dd7bbecae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369928/normal_5f95803d4120f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/takedagupejunonezimo.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/vizio_37_inch_lcd_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/missing_millions_hepatitis.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/personal_computer_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/cherub_books.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/falling_upward_richard_rohr.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/16709093770.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CB 4616 bytes
SHA-256: 4ab1fc2f18d25f9ae6232994e47f261466f05bff7139bff988bc45e0894ca99d

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