Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1287a08878896cf…

MALICIOUS

PDF

73.3 KB Created: 2021-02-25 15:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a33d68628554694fd74ec9beba189f43 SHA-1: b06e07c4ae4ecfbe64a5087e5482f002496d58eb SHA-256: e1287a08878896cf667574ce60445f97c514adba09097da4b84898005f6fc620
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to router resets, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/aws?utm_term=how+do+i+reset+my+ubee+router
    • http://xubaseki.iblogger.org/report_fake_apple_email_uk.pdf
    • https://cdn.sqhk.co/nisugavu/jgeQgcI/official_table_tennis_rules_singles.pdf
    • https://static.s123-cdn-static.com/uploads/4383334/normal_60000db91d4d5.pdf
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5feba029ae8dd.pdf
    • https://static.s123-cdn-static.com/uploads/4467577/normal_5feb6cb1dcdbc.pdf
    • https://cdn.sqhk.co/bokupajokim/idicqii/kavipuman.pdf
    • https://cdn.sqhk.co/tajiwikiter/hdHkhiu/38775820966.pdf
    • https://cdn.sqhk.co/jinubodilev/JjfggdN/raid_ant_and_roach_spray_safe_for_pets.pdf
    • https://cdn.sqhk.co/votojuxosaf/fjiOhhj/sewow.pdf
    • https://static.s123-cdn-static.com/uploads/4369765/normal_5fc67520bcaf2.pdf
    • https://cdn.sqhk.co/tokofape/lBechf7/list_of_free_sleep_sounds_alexa.pdf
    • https://cdn.sqhk.co/duponetix/XIfggfB/pixel_survival_unblocked_games.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bubejukajogimis.epizy.com/dictionary_app_english_to_marathi.pdf
    • http://kodireso.epizy.com/giwezepoxokufimepipejeto.pdf
    • http://pixutixiziv.epizy.com/92230117378.pdf
    • http://dakafatuvuguviz.atwebpages.com/bipilekad.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_off0000def0.bin
7ff232cf08e28f204484db0dab6ec7c59f110a3683c813601853f32a50d06512		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF0 5024 bytes
font_01_sfnt_off0000effd.bin
0f2669805fe8624a21a961040e099f319c273f52b6dea13f683bed24e8f0662e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 12384 bytes

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