Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdc5d5e58473c56…

MALICIOUS

PDF

75.1 KB Created: 2021-03-13 16:56:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4cb764489fa92ccadeb673dd66cc28ee SHA-1: cdd7fe13be26693f40c474334319b4850151015e SHA-256: 0cdc5d5e58473c56bf1f5155146342c91319d1ea80c89dd6aacd0203321ee85e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable hosting domains, indicating a likely attempt to distribute malicious content or conduct phishing operations. The presence of numerous external URIs and the 'link farm' heuristic further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/123?utm_term=locket+lovely+nirman+punjabi+song PDF link annotation
    • http://mizafaroremida.getenjoyment.net/soruzirowunepozalemitevis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459180/normal_60454ab62652d.pdfIn PDF document text
    • http://numulul.mygamesonline.org/11341142151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_601aeb48223dd.pdfIn PDF document text
    • https://ganupedudajoz.weebly.com/uploads/1/3/4/5/134586443/juwitamiz.pdfIn PDF document text
    • https://bomoturu.weebly.com/uploads/1/3/1/3/131384468/7515586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426695/normal_5ff1dcd461ee5.pdfIn PDF document text
    • http://witotikumuw.22web.org/bitixebemewuf.pdfIn PDF document text
    • https://lopifonexebifi.weebly.com/uploads/1/3/5/9/135986218/pejinutixoloko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369796/normal_6028c3503a096.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412887/normal_5fff0b671e62c.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/wazelelutu.pdfIn PDF document text
    • https://sekugiwa.weebly.com/uploads/1/3/0/7/130739582/7574961.pdfIn PDF document text
    • http://dixojele.22web.org/sewutunikego.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fafovinipola.epizy.com/rilopajonazurupuj.pdfIn PDF document text
    • http://sogoxutagejuno.atwebpages.com/jurexajotupubakafozuwu.pdfIn PDF document text
    • http://wexewowi.rf.gd/gagazabovu.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/instep_quick_n_ez_double_bicycle_trailer.pdfIn PDF document text
    • http://daroxexu.rf.gd/defining_and_non_defining_relative_clauses_exercises_1_bachillerato_with_answers.pdfIn PDF document text
    • http://gajitigigezujan.epizy.com/defanolopejadubejoviledag.pdfIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_4b82f66dbf7d47cd99c3bd4b5b3214df.pdf?index=trueIn PDF document text
    • http://muxolisakij.epizy.com/finozojoxubobajoka.pdfIn PDF document text
    • https://f26e6bca-ce10-4524-9610-ed5ef7c8d48b.filesusr.com/ugd/ac8c68_8bcec094daf342859f0b2c86b3367c85.pdf?index=trueIn PDF document text
    • http://tifilow.onlinewebshop.net/the_magicians_season_5_episode_6_promo.pdfIn PDF document text
    • http://vezexosewomex.epizy.com/wugex.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_off0000e48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48F 5636 bytes
SHA-256: 2f467b75f98f1fac296848eec64772678c735f040484ed411c8c95594ed19e58
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 11488 bytes
SHA-256: 3b17515786c93e39b7149b03d4eeb362be86f953e37e23444f7d4c1ca7837d64

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