Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50ce16ae68096d0…

MALICIOUS

PDF

78.4 KB Created: 2021-05-12 19:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d70e74184ff09f3fa31a9d282c065395 SHA-1: 2067c0a2f64e8b2a2754df3bf23586cc7c50ab22 SHA-256: c50ce16ae68096d007fbc171ce7a1c30a9718b1fb5e506b9a85b3c8af9f47922
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=you+can+heal+your+life+by+louise+hay+pdf+book PDF link annotation
    • http://liniwugo.iblogger.org/human_body_systems_worksheets_middle_school.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/djihchd/mapevojekusipogoroxazev.pdfIn PDF document text
    • https://zajutarox.weebly.com/uploads/1/3/0/8/130814803/mavonakalapazi-gigidogaz-newanasowex-lagaw.pdfIn PDF document text
    • http://lorutupaxuposu.22web.org/wunipogadigowonil.pdfIn PDF document text
    • http://topcreditmonitoring.info/neded3ib0m.pdfIn PDF document text
    • http://tinabubolapab.iblogger.org/fumigipoporo.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/ggBKjgE/war_and_order_cheats_2020.pdfIn PDF document text
    • https://wabexerimib.weebly.com/uploads/1/3/0/7/130739061/pibujisodoxug-kinuduf.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/327181452312cr4i.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/ihaggVa/28910849684.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/hbiitig/kuzijod.pdfIn PDF document text
    • http://shortsomfj.space/savakorimemapuu9ou.pdfIn PDF document text
    • http://gedawirij.66ghz.com/deburulewepanofapa.pdfIn PDF document text
    • http://nujinedopidil.iblogger.org/vabezoge.pdfIn PDF document text
    • https://murufirekitopu.weebly.com/uploads/1/3/1/8/131856476/9371a2c8.pdfIn PDF document text
    • https://cdn.sqhk.co/voxobidivel/jg5gjKo/birds_of_prey_review_ign.pdfIn PDF document text
    • http://pinerapidsrr.com/80324451104rkmob.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pokowowusi.rf.gd/bawaw.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/tatibaxavatafujevaxunaku.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/annotating_informational_text_handout.pdfIn PDF document text
    • http://supikovibamukip.epizy.com/34563244121.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_off0000f24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24C 5512 bytes
SHA-256: f923bf740ed73771ab1e7ebb0986caa7d2b68c75736d3e780533ba0bda9dcad6
font_01_sfnt_off00010502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10502 11328 bytes
SHA-256: 11218438ab2c935c641b7f2d2d3c36a4f4f3500f239881b0bd0f2374706c07d6

Open this report in the interactive analyzer, or submit your own file for analysis.