Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dedb1f8b2aa52e4…

MALICIOUS

PDF

103.3 KB Created: 2021-04-02 07:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7573aa7ff3711d3a5eb5cec3f1e42b38 SHA-1: 814a939e9c97260ef8be95186d547719c436222e SHA-256: 5dedb1f8b2aa52e4cc3b4601452bfc47d8a4340ddfe1146cd395682090cb9bba
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'lozipotod.ru', which is likely used to host or redirect to a malicious payload. The document body, though heavily obfuscated, suggests a lure related to educational content to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=go+math+grade+1+answer+key+chapter+8 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417221/normal_5ff818a882c11.pdfIn PDF document text
    • http://vedatolinofiz.iblogger.org/palo_alto_pa-_3020_datasheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469831/normal_6011c3d1dfd05.pdfIn PDF document text
    • http://carishr.com/51829869133o204t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_605abc2a56c78.pdfIn PDF document text
    • http://maxovulosaxa.22web.org/86195833960.pdfIn PDF document text
    • http://torchqbfl.fun/tifegodezokewafadakamaxeo3kz.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/zumezeviwakiz/tuvowelimamikoguxofadovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41be1d4-9c94-4afd-b253-dc8b42b63cf0/how_to_set_up_cycleops_mag_trainer.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/lododemiga.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/brookfield_dv2t_viscometer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00d60aea-1d8a-492b-b9a9-bcac4d038bb3/statistics_for_management_and_economics_11th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34bc50ea-9338-46b5-974f-0fd271f680bf/foritudozako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03e56131-0448-4879-ab67-11bf15e0ef36/comfort_sentry_thermostat.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/emulator_android_ringan_ram_1gb_gratis.pdfIn PDF document text
    • http://pomezup.epizy.com/guidelines_for_treatment_of_hypothyroidism_in_pregnancy.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_off000153fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153FD 5992 bytes
SHA-256: bd05d69065c9fc6ce12d0c32a3d3654505192349079bd303cde006a5e9aa91c0
font_01_sfnt_off00016851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16851 11072 bytes
SHA-256: 592754e5c6d410a8796af2a68476d1658d4f84e07c16232dc2254e644f09e182

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