Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce66439a2984befc…

MALICIOUS

PDF

77.7 KB Created: 2021-03-17 13:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 061b450a90205ca9a5742d06dc1cc75e SHA-1: f855f52775d0bdde3946a9ddfa79b02586b1e988 SHA-256: ce66439a2984befc3d51b8bac563908b628092f0fe71a82ac61079c16e45fd65
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.Trojan. The embedded URL and the document's metadata suggest a lure related to online gaming cheats, likely to direct users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://lozipotod.ru/wix?keyword=rdr2+online+money+glitch+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467576/normal_604d28d99ba82.pdfIn PDF document text
    • http://ig-objectionform.com/how_many_types_of_bowline_knots_are_therevcbv5.pdfIn PDF document text
    • https://lowaribopuvege.weebly.com/uploads/1/3/2/8/132814272/gugonas.pdfIn PDF document text
    • https://rolobidixogiru.weebly.com/uploads/1/3/1/6/131637372/1272980.pdfIn PDF document text
    • http://visionnew.xyz/ezdrummer_2_download_sizevm226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_5fe571d325952.pdfIn PDF document text
    • https://vonorakukipi.weebly.com/uploads/1/3/4/7/134721252/828745.pdfIn PDF document text
    • https://rutelixiriselop.weebly.com/uploads/1/3/4/7/134748314/logaresos-jasolulabow-pabowinu-gewof.pdfIn PDF document text
    • http://itawomen.fun/fajigapokusaviwutedizz1z0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://27475d5a-2981-497d-8cd5-0c310ef10f8b.filesusr.com/ugd/9cb927_56bebbb12a2441f7972c2eb35a024b91.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/arterial_line_removal_guidelines.pdfIn PDF document text
    • http://zemoxatovasoga.rf.gd/equality_before_law_define_in_hindi.pdfIn PDF document text
    • http://remigesej.epizy.com/jawevibilufawojimudepega.pdfIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_b96b140d906849af8367434afdc0a7f2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/how_to_change_battery_in_honeywell_doorbell.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/2161326155.pdfIn PDF document text
    • http://pudunajuge.rf.gd/nawiwanubujilemuxeketi.pdfIn PDF document text
    • http://wunozoviwo.epizy.com/5001138950.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16D 5204 bytes
SHA-256: db1a0dc934a74caf95d1997f75aeedfdab928edcec747a5a2262c6d63c7c02f8
font_01_sfnt_off00010305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10305 11324 bytes
SHA-256: 89ea1b32e8fa5294f7f6ed4e4703f061ca02b3a6570b4eef0e4f41ee4053d2dc

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