Malicious PDF — malware analysis report

Static analysis result for SHA-256 9671034764dc1c34…

MALICIOUS

PDF

77.8 KB Created: 2021-03-22 00:11:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5628a7d4ad9d5607648d2baec9696672 SHA-1: e90cbf541b2a384f39cab988ae23034e4f40fe96 SHA-256: 9671034764dc1c34f22a9060c50b5ec4724dadbecc6a1c732da826923d5cc35b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting it's designed to redirect users to a malicious site. The document body, though heavily obfuscated, contains text related to 'meta analysis example pdf' and 'wkhtmltopdf', indicating a potential lure to disguise malicious intent. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

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://pelibifir.ru/award?keyword=meta+analysis+example+pdf
    • http://beautysss.site/25678423500xi1nt.pdf
    • http://blancer.xyz/how_to_check_graco_car_seat_expirationjus1f.pdf
    • http://dudipoviju.22web.org/brave_privacy_browser_apk.pdf
    • http://it50discount.pro/5146505377272bbs.pdf
    • http://parujom.iblogger.org/how_to_learn_excel_financial_modeling.pdf
    • http://creditstar-kabinet.com/race_car_coloring_bookf4i5d.pdf
    • http://mastericy-chistoty.ru/garatapixejugamulufamlfkq2.pdf
    • http://ruszaimclub.ru/musapumufobexukowarunam84o6.pdf
    • http://sayseedokg.com/gimpy_gimpy_plant_seedsagzi0.pdf
    • http://gibojulel.22web.org/que_significa_la_m_en_los_diccionarios.pdf
    • http://2022god.com/dajoxelegowegepabuxifiaeuww.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f8ba888e-8f71-4fde-8303-550399648f4e.filesusr.com/ugd/17ce20_0afe0033cf5c40028a15c2216874137f.pdf?index=true
    • http://jovelabomitom.epizy.com/bangla_song_tamil.pdf
    • https://s3.amazonaws.com/gumegulaxi/kobugedometomilekovise.pdf
    • https://s3.amazonaws.com/jupudizadid/bizhub_c220_driver_windows_7.pdf
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_92f4a60ef5044db99b6f5ca35568091b.pdf?index=true
    • http://sedilar.rf.gd/washington_gas_bill_pay.pdf
    • https://s3.amazonaws.com/fusopoxipo/wow_auction_house_gold_guide.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_off0000f3f4.bin
c78281fbb0d22bc76248c861ef821422b4113646729bbfcec17e0f0cf3a8db35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F4 5264 bytes
font_01_sfnt_off000105eb.bin
648c4c6737e16fa944e059a884c053ea6c82253dd94f320c59ea381fb80ad865		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105EB 10760 bytes

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