Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb29ec0de98a2f23…

MALICIOUS

PDF

75.8 KB Created: 2021-02-17 08:20:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d329f6e0fbbfb1293c3548cf4ffe4c27 SHA-1: 5ee72f3222205538caeba85ead89e50ddf952854 SHA-256: cb29ec0de98a2f23592d98b2a1719860b522d211252dc27915d493f19bd17933
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning model as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URIs and is described as a link farm on disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of embedded URLs indicates an attempt to direct 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://jottigo.ru/123?utm_term=penpal+dathan+auerbach+review PDF link annotation
    • https://cdn.sqhk.co/texafikogot/eytD6Dh/tenowivebovepemaladik.pdfIn PDF document text
    • http://piredvizhnik.com/789018160776oqje.pdfIn PDF document text
    • http://ig-copyrightviolation.com/lokimepumajinojo7y5ip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384142/normal_6009a1011f0ea.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/musimisevokowejoxit5bhn0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5fe31686680c0.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/t8hfQhc/zelofepivafubisolivaveduz.pdfIn PDF document text
    • https://zadukali.weebly.com/uploads/1/3/5/3/135340438/wusibomuna.pdfIn PDF document text
    • http://1offpark.xyz/3323059966874r66.pdfIn PDF document text
    • https://cdn.sqhk.co/mikakiraw/cojjjhb/74170840635.pdfIn PDF document text
    • http://fuposipavelolug.iblogger.org/gcse_geography_coasts_worksheets.pdfIn PDF document text
    • http://xekumaluvox.iblogger.org/cotton_eyed_joe_dance_step_sheet.pdfIn PDF document text
    • https://wuzitefagoxu.weebly.com/uploads/1/3/1/8/131856046/xenifuru-sudotavamuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476270/normal_5fe833f2b4055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481422/normal_5ff1cb6a84abb.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/nurudubenia6g0.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/jHMjegf/uber_driver_app_not_updating_earnings.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nokemufebevezo.rf.gd/arkit_measure_android.pdfIn PDF document text
    • http://wilesodirax.epizy.com/dikikuwusuzonefelan.pdfIn PDF document text
    • http://belajuba.epizy.com/jane_jacobs_death_and_life.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

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_off0000eb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB71 5276 bytes
SHA-256: 57697b0811b59068a73b14940bea894d37047f89b4a17c0068b079acd10d6085
font_01_sfnt_off0000fd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 10740 bytes
SHA-256: de501524cf79aae03792b95e301eb55dec22fae5d6e7d29473d78dd5f8a53056

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