Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cc1b991bffc06be…

MALICIOUS

PDF

93.9 KB Created: 2021-03-15 07:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05f097d161e80c401131338a9fddf623 SHA-1: e5b6a5dab88a6fcba20f402ba3e9a48c458f270e SHA-256: 7cc1b991bffc06be93b3356f01e74b5e36e3221d3b433ad1f0912811764335d2
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominently featured in the document body, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs and the overall detection profile point towards a malicious PDF designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/wix?keyword=my+side+of+the+mountain+study+guide+pdf
    • https://cdn-cms.f-static.net/uploads/4376098/normal_604ac9601846b.pdf
    • http://zipubezexupoka.mywebcommunity.org/2468519928.pdf
    • http://disetikala.22web.org/john_deere_x320_for_sale_nz.pdf
    • http://balifruit.com/442595599168z33o.pdf
    • http://hairsprof.ru/gestion_de_la_calidad_total_cuatrecasas4j3e9.pdf
    • http://zukixulen.mypressonline.com/4839537458.pdf
    • http://nakekizedexu.getenjoyment.net/pixabevex.pdf
    • http://chisto-chisto52.ru/que_significa_el_titulo_como_agua_para_chocolate3o9ud.pdf
    • https://static.s123-cdn-static.com/uploads/4499317/normal_6000b4434b650.pdf
    • http://joxitikoki.getenjoyment.net/betukiladinerurerupafiduf.pdf
    • http://dujojiwasemob.mywebcommunity.org/gidorapuwatodune.pdf
    • http://boketizabujig.scienceontheweb.net/logopavakaxaw.pdf
    • http://moneyindia.site/zenubirejaxaxesiv69mi.pdf
    • https://static.s123-cdn-static.com/uploads/4469631/normal_600767c8919f0.pdf
    • http://drive4mclaneeffingham.com/ritumisavp11b.pdf
    • http://pakirekugep.scienceontheweb.net/69244589563.pdf
    • http://hempmap.ru/941072456218r76t.pdf
    • http://handler-autoscout24.com/supply_chain_management_education_programs32r11.pdf
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5fd7b7959d056.pdf
    • http://zathkatow.xyz/skype_portable_heisen2d45.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pedirite.onlinewebshop.net/why_is_my_epson_xp_320_not_printing.pdf
    • http://pobavawekede.rf.gd/xazegubifapakezavotilona.pdf
    • http://gaxunexuxulaxed.epizy.com/biwedetolekevomalunikiz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d9b.bin
1c1a540e97b784379c76367d424c12f63dfe44b79e7555a915dde6683e927b25
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D9B 5432 bytes
font_01_sfnt_off00014010.bin
88e3ad9b38601a297048887bce5ea01acaffa95987c6d237acb1c9179f4dabc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14010 12752 bytes