Malicious PDF — malware analysis report

Static analysis result for SHA-256 9772fb792317cb40…

MALICIOUS

PDF

78.0 KB Created: 2021-03-01 18:04:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2ab35bd576919c76ace8b6790909a57b SHA-1: 1f5b48e90c7112f31f22f5320e05bb197d7e4369 SHA-256: 9772fb792317cb4049e3cfc9370db72302ddf3a75b125c364019a979c1f00c68
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 host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to academic citation, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=how+to+cite+electronic+sources+in+apa+format PDF link annotation
    • https://cdn.sqhk.co/gupimupiset/QggjedN/lawubaxisuluxoturoku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5fd34f96a3a04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475208/normal_60158e688d565.pdfIn PDF document text
    • http://opensalon.xyz/editable_minnie_mouse_birthday_invitation_templatekteme.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456140/normal_5ff575c58ea8b.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/Znrijct/volotinosor.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/jggKjcc/emerging_science_journal_impact_factor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_60121895b5363.pdfIn PDF document text
    • https://cdn.sqhk.co/maduzonuxoke/ijijKXe/mechanics_bank_mobile_banking.pdfIn PDF document text
    • http://freds.space/kikobevosujagesu3b446.pdfIn PDF document text
    • http://gunepevoxop.66ghz.com/wututulaxoluxoruja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sasitegeke.epizy.com/68307925163.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/tosijejuloponijurixe.pdfIn PDF document text
    • http://mubaviz.epizy.com/power_air_fryer_recipe_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/bharti_infratel_annual_report_2011-_12.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/sanugakabugisij.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/essence_poe_guide.pdfIn PDF document text
    • http://gaxufaxurawago.epizy.com/10th_compartment_exam_2019_date_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/23058760152.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/lahore_chamber_of_commerce_membership_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/gugaxirob.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_off0000f625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF625 5212 bytes
SHA-256: fc1a06e28d1d74801cf33ac0307a0c89cfaa9c668eb15760ea785b618fb0607a
font_01_sfnt_off000107dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 10104 bytes
SHA-256: 14bc5476cab4766b18355cdb951f78c6c3e097afd37b1e366b6f5624f973ff6a

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