Malicious PDF — malware analysis report

Static analysis result for SHA-256 50594f6d6122852a…

MALICIOUS

PDF

70.1 KB Created: 2021-01-15 06:49:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 08680f85ad90c0d2965fd043e4d6965e SHA-1: 94d738f3bff4f516672d22667e29d5a650bb03dd SHA-256: 50594f6d6122852ab9c7c643acf11e5c072db775b774516c5628a44a9a2cb150
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, including one pointing to 'trafficel.ru', which is likely part of a phishing or redirection scheme. The PDF's structure and the presence of multiple disposable links suggest it's designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafficel.ru/aws?utm_term=laxmi+aarti+song++pagalworld PDF link annotation
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/5149781.pdfIn PDF document text
    • https://site-1176067.mozfiles.com/files/1176067/pifowafok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_5f9d3d40d363d.pdfIn PDF document text
    • https://site-1177662.mozfiles.com/files/1177662/lutid.pdfIn PDF document text
    • https://site-1174816.mozfiles.com/files/1174816/madness_ball_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368979/normal_5fcd2762c3ce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f872616bc2ae.pdfIn PDF document text
    • https://site-1168173.mozfiles.com/files/1168173/34767713667.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410678/normal_5fddbb0562e02.pdfIn PDF document text
    • https://site-1178171.mozfiles.com/files/1178171/hearts_on_fire_lyrics_passenger.pdfIn PDF document text
    • https://site-1200667.mozfiles.com/files/1200667/mutafoxaxapafowuxaboboru.pdfIn PDF document text
    • https://site-1172175.mozfiles.com/files/1172175/vewigoponotaxejejujojogem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD040 5380 bytes
SHA-256: fb41e101f9b44d52f2fb9294486678b8cd4868199605ebf5fec83ed282183e67
font_01_sfnt_off0000e28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28D 12484 bytes
SHA-256: 3687fd4a7910278e29c826be191c5dcc619f0251af7c309383111f99e4147409

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