Malicious PDF — malware analysis report

Static analysis result for SHA-256 de194921d45c2280…

MALICIOUS

PDF

92.6 KB Created: 2021-02-22 06:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: df9fe1caa1bfaaf9e886ff8de725f8c6 SHA-1: 74de0072d2552b0cc36779fbdd06f0c5a4b5a66e SHA-256: de194921d45c22808017a90fcbc9b4065d41fc610d6ea2ad4416fe55052bc1b0
96 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 an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the ClamAV detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/123?utm_term=nice+meet+you+ka+matlab+kya+hota+hai PDF link annotation
    • http://prognoz-football.club/nolotuvegidozofaletosoejmvy.pdfIn PDF document text
    • https://gumikixinugud.weebly.com/uploads/1/3/4/8/134864359/ac92f471d.pdfIn PDF document text
    • https://fusarutuzazeni.weebly.com/uploads/1/3/5/3/135346017/4834260.pdfIn PDF document text
    • https://rupasofo.weebly.com/uploads/1/3/4/8/134892789/vejewexide.pdfIn PDF document text
    • https://benedelewerovil.weebly.com/uploads/1/3/1/3/131384674/lilinaduwefafem_maxepazo.pdfIn PDF document text
    • http://golulim.iblogger.org/karogurewotarufijen.pdfIn PDF document text
    • http://1freedom.space/31900765886c7s2h.pdfIn PDF document text
    • http://usejus.club/malugakazolinu5wl0r.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/xevogotok-riwolesumif-bopegiromo-keganixinonuk.pdfIn PDF document text
    • https://xelewutoritawi.weebly.com/uploads/1/3/1/0/131070131/6663950.pdfIn PDF document text
    • http://dimax.website/dufakijanegam0au6.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/2929442.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/lisavijedaru.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/17604421275.pdfIn PDF document text
    • http://vebaxabono.epizy.com/boulders_cardiff_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/top_platform_as_a_service_providers.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/21264254554.pdfIn PDF document text
    • http://gibapomidumitar.rf.gd/how_to_write_a_good_advertisement_schwab.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/tasupuxogaluroretiv.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/70977512745.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/guns_germs_and_steel_book_online.pdfIn PDF document text
    • http://mowumaja.epizy.com/tipelesuvimapetatujobe.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_off00012fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBD 5040 bytes
SHA-256: 8161aa5473f4783cbd5d20451fd32a7fc0de8eae1aa5b5ce3cea63d7f27f0668
font_01_sfnt_off000140cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140CF 10524 bytes
SHA-256: c27498382ffbed560ed8f49f70e057419e70389a568c9cea62903cb98c2cf804

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