Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0990bb6126b014…

MALICIOUS

PDF

100.9 KB Created: 2021-03-03 15:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d73f9e42b724f71af74957d7e4af21cc SHA-1: 784ddce9d6077867c689239f6f1894302e2c1d0e SHA-256: 8d0990bb6126b014d680102740f07a71f8d11390630ec01f833a2c13a0ebeafc
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to "Orbit easy dial 6 station manuale italiano", likely a lure to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/123?utm_term=orbit+easy+dial+6+station+manuale+italiano
    • https://cdn.sqhk.co/tipefima/igc2BkN/34117626050.pdf
    • https://pujonavow.weebly.com/uploads/1/3/5/9/135958036/mabuvo-dulokezamezid-gevad-ranoxujemig.pdf
    • https://cdn.sqhk.co/gukitane/jbjaOii/plot_elements_definition_literature.pdf
    • https://cdn.sqhk.co/xegunorasu/i9PZlb7/real_football_2020_gameloft_mod_apk.pdf
    • http://doxisodezezaku.iblogger.org/4030195965.pdf
    • https://temerineg.weebly.com/uploads/1/3/0/9/130969052/tixarosuxigaf.pdf
    • http://prodson.fun/zuzudz5qmw.pdf
    • http://bilkan.fun/mathematics_for_machine_learningo40v8.pdf
    • http://card2card.live/48603817634welw9.pdf
    • http://hot-money.fun/66905763599kuy1w.pdf
    • https://difototasewi.weebly.com/uploads/1/3/5/9/135986065/991965.pdf
    • http://edayafar.xyz/bufibegukazirigugebujedilj9ai8.pdf
    • http://meblik.su/wilkes_barre_direct_operations_center4lvir.pdf
    • http://50off.pro/save_game_hay_day_androidufs48.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vawujularow.rf.gd/47334418336.pdf
    • https://s3.amazonaws.com/kuboki/ford_ranger_raptor_spec_sheet.pdf
    • http://keximatefabuzi.rf.gd/79523034309.pdf
    • https://s3.amazonaws.com/rizezobabub/fajamivatatota.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_off00014591.bin
93bca295fcf20f222036a8c701f5f576459747b50326a361ed7266a4360d0e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14591 5392 bytes
font_01_sfnt_off000157c9.bin
f58dac70b5ce52bf81df34d1a822a0cb4f1e5c05be5d1d20ac4417136bd3fdfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157C9 2048 bytes
font_02_sfnt_off000160a6.bin
726a5705dac8fb2610379a1787d6a76cb55db991c3a1872621ed067008c9f03c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160A6 11112 bytes

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