Malicious PDF — malware analysis report

Static analysis result for SHA-256 35be583ba58c9d22…

MALICIOUS

PDF

80.5 KB Created: 2021-03-22 09:41:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a48ae3ca356fbdf1fb4595b2702301cd SHA-1: 2d5edb5b513057aa9457b925904c3e0ee0e9725b SHA-256: 35be583ba58c9d225ee7118580c1ba862a084def0cf3ac77d37da94543497409
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, contains text related to Azure ARM templates, suggesting a social engineering lure. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dafemum.ru/123?utm_term=azure+arm+template+dependson+nested+template
    • https://cdn.sqhk.co/wevamerazo/eDgjdWo/88138824447.pdf
    • https://cdn.sqhk.co/vunelebu/VCpGUno/23022903612.pdf
    • https://cdn.sqhk.co/zufuxirap/geTjfqb/dojimikufefuweguwisajat.pdf
    • https://cdn.sqhk.co/nasanoroge/jdxJfhj/download_draw_defense_mod_apk.pdf
    • http://piwupulor.iblogger.org/pizza_hut_menu.pdf
    • https://cdn.sqhk.co/pananumujo/V2jcgdB/78184311546.pdf
    • http://dujosibixejo.22web.org/59985069617.pdf
    • http://kefikajutadab.22web.org/dirifavamonaxiton.pdf
    • https://cdn.sqhk.co/puwupasakej/ggrjcIi/41812769680.pdf
    • https://cdn.sqhk.co/tavikebepo/dfSjcdm/65986386467.pdf
    • https://cdn.sqhk.co/posogamumut/iPQhhge/25248274819.pdf
    • https://cdn.sqhk.co/fitodofafe/Shdhjjg/18753077279.pdf
    • https://cdn.sqhk.co/xanikadir/HgjcLLp/zanubukevojezefo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jefiwimagi.epizy.com/bubepunebitawuk.pdf
    • http://runoxujozu.rf.gd/dhcp_server_win_7.pdf
    • http://fiwimawa.rf.gd/relapse_prevention_plan_worksheet_for_sex_offenders.pdf
    • https://s3.amazonaws.com/dufekifaral/16380230557.pdf
    • https://uploads.strikinglycdn.com/files/a0755dbc-0e32-4280-a6ec-ac183874f060/64915183253.pdf
    • http://risawanidav.epizy.com/bl_theraja_electrical_technology_vol_2.pdf
    • https://uploads.strikinglycdn.com/files/52ff2e48-2ab0-4a0e-9488-86535000eeb0/4709654370.pdf
    • https://s3.amazonaws.com/zepifudoxapo/6179982560.pdf
    • http://dukutogesedu.epizy.com/pujutafazugajosav.pdf
    • https://uploads.strikinglycdn.com/files/ee83c741-bd52-48a7-89ac-772b4f82f1bf/sikevixopibavikebipes.pdf
    • http://lujokasavem.rf.gd/29084758642.pdf
    • http://nasewuji.epizy.com/35570321173.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_off0000fd85.bin
219e00dfe62bbde43a64301c79332b2c5aea7be3c688b45f186ca128dcb6ef27		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD85 5144 bytes
font_01_sfnt_off00010ef3.bin
fe27d85c7483f70712b8b41ec7f35e36cebb7fa2a28ec59f04dc8c1e29d6eb9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF3 10792 bytes

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