Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bdcea2fc3c8857…

MALICIOUS

PDF

71.4 KB Created: 2021-03-30 06:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 290f88156274f43423a6ede0f8abd08a SHA-1: 23aa288eb811837f6db25920f43c487685301fcc SHA-256: 56bdcea2fc3c88573353979146a97ab7f547e57999fa67be05676fde09d65bfc
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 the domain 'dafemum.ru', which is likely used to deliver a payload or redirect the user. The document body, though heavily obfuscated, contains references to 'Mansion map for minecraft pe', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=mansion+map+for+minecraft+pe
    • https://cdn-cms.f-static.net/uploads/4455901/normal_5fd28ac54c27e.pdf
    • https://tebuwopelovenep.weebly.com/uploads/1/3/1/4/131453198/247676.pdf
    • http://wotaxatumumodok.sportsontheweb.net/rukuwazifasotalabiwazikij.pdf
    • https://cdn-cms.f-static.net/uploads/4382965/normal_602d3031bc267.pdf
    • http://doxedisipi.scienceontheweb.net/moodle_learning_management_system.pdf
    • http://wodekenizowa.getenjoyment.net/mokabuvenevumoduxonulaw.pdf
    • https://sapezirotup.weebly.com/uploads/1/3/4/5/134576964/jepedej.pdf
    • https://xixilizuxuwogag.weebly.com/uploads/1/3/4/8/134879277/zomoraxubugod.pdf
    • http://zokugorevat.mywebcommunity.org/9590325418.pdf
    • http://fatunatet.getenjoyment.net/41737884627.pdf
    • https://cdn-cms.f-static.net/uploads/4480414/normal_604e33563920f.pdf
    • http://zuxuvikewi.sportsontheweb.net/hiperplasia_benigna_de_prstata.pdf
    • http://lotupojaxuvutix.mygamesonline.org/asteraceae_caracteristicas.pdf
    • http://zimezobot.getenjoyment.net/memories_will_never_fade_tattoo.pdf
    • https://panumelu.weebly.com/uploads/1/3/4/6/134668876/1670ce66249.pdf
    • http://xafesuvorolivig.scienceontheweb.net/how_to_apply_hair_dye_without_a_brush.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xijejuvi.myartsonline.com/55027839581.pdf
    • http://sipanokule.onlinewebshop.net/could_be_better_synonym.pdf
    • http://pewubik.atwebpages.com/1463550981.pdf
    • http://pelebirepopo.onlinewebshop.net/4212092858.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_off0000d991.bin
be0b6b333cea4dc024de902f25f6f340c8d95cab4f7242dac9f310dbf28b0b30
pdf-font-stream PDF embedded font (sfnt) at offset 0xD991 5132 bytes
font_01_sfnt_off0000eb00.bin
1646ccd5d30406ba66d1d7946922e5eca3dc64152b4aa99ec78b6860c15f9973
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB00 10508 bytes