Malicious PDF — malware analysis report

Static analysis result for SHA-256 501b863e70a4614d…

MALICIOUS

PDF

73.2 KB Created: 2021-04-07 18:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0191dcf91f41013c1ff80901f9ee3fe SHA-1: 780d8e7fd6f6da311f54bd8db30cca231ce76153 SHA-256: 501b863e70a4614d46656ed08b263d16af0753d3b80a0519c92948a13138ae72
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 external URI pointing to a URL that appears to be a lure for a generator manual, likely to trick users into downloading further malicious content. While no scripts were directly extracted, the PDF structure and heuristic firings suggest it's designed to exploit users through deceptive content and external links.

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://kuzutuzo.ru/strik?utm_term=troy-bilt+xp+7000+running+watts+portable+generator+manual
    • http://berkeciftci.net/how_to_draw_3d_on_autocad_2017dpm7l.pdf
    • http://fringigejy.site/6443512046872xn2.pdf
    • http://kejurudoji.medianewsonline.com/astm_a572_grade_60.pdf
    • http://meetcabinets.xyz/57254638330gb38z.pdf
    • http://girlita.space/touhoumon_another_world_guidebf29m.pdf
    • http://zodatowafe.getenjoyment.net/52897131169.pdf
    • http://retys.fun/nolidakobakanwjeu.pdf
    • http://idealica-co.site/xitexesesojufubisituzne.pdf
    • http://tryici.xyz/anomalias_geneticas_na_especie_humanap7iik.pdf
    • http://rijoginijamibeg.mypressonline.com/jowonu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fifomi/work_and_energy_worksheet_answer_key_physics_classroom.pdf
    • https://s3.amazonaws.com/doxifuba/bike_route_app_android.pdf
    • http://baletax.onlinewebshop.net/yardsticks_book_4_year_old.pdf
    • http://nizofikunatafu.atwebpages.com/romimisevaro.pdf
    • https://s3.amazonaws.com/legapatatezisa/35757230997.pdf
    • http://siletafelit.epizy.com/common_ophthalmology_optometry_eye_abbreviations.pdf
    • https://s3.amazonaws.com/fenatagazise/befipivaxujavuj.pdf
    • http://xajamojepoz.rf.gd/cuanto_equivale_una_pulgadas_y_media_en_milimetros.pdf
    • https://s3.amazonaws.com/wiwamoxamo/gidom.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfae.bin
24a8de056f78629048c73ee7042765e1fee5560ae297ffad117e13ab3cfcea48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAE 5624 bytes
font_01_sfnt_off0000e2e2.bin
2cfd9a4756d9afbc1a93cf7bceee0b0c80de15ff18ea6457c6df729db51151a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E2 11208 bytes
font_02_sfnt_off00010910.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10910 4324 bytes

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