Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ce7ded7c0e33ec…

MALICIOUS

PDF

78.6 KB Created: 2021-03-22 09:12:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2face106c641f8aba298b5f739d6f2e9 SHA-1: 4870e17ccf6d6a7b3a0aae80a6ed25a16bcbf52c SHA-256: 94ce7ded7c0e33ec5b873e5990fb978d6fbb93d9ce06a9ce4f1d325109d4d68e
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 embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to 'guide services in alaska' and authoring information, suggesting a lure to trick users into visiting the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=guide+services+in+alaska
    • http://gutaferu.22web.org/sopos.pdf
    • https://sefomaxezaniv.weebly.com/uploads/1/3/1/4/131483109/pegewawamotamu_fenutesifiwis_duvafi.pdf
    • https://foserexekoxa.weebly.com/uploads/1/3/0/7/130740627/6355078.pdf
    • http://trackcreditscore.info/icd_11_codes_for_acupuncturei9juu.pdf
    • http://goldstein.capital/how_to_clean_rapid_egg_cooker5nyzm.pdf
    • https://winudepawo.weebly.com/uploads/1/3/4/1/134132470/fatoxegaseleler.pdf
    • https://lakupofudeb.weebly.com/uploads/1/3/0/7/130775354/146d8e02990a.pdf
    • https://rejezulibege.weebly.com/uploads/1/3/4/0/134018585/wadadokex-kedamugolob-vizuzifukov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_db3c0b9f074149c6a255fa847f0dc917.pdf?index=true
    • https://s3.amazonaws.com/geradi/genalex_gold_lion_kt77_datasheet.pdf
    • https://s3.amazonaws.com/fopalew/jsca_stadium_ranchi_weather_report.pdf
    • https://s3.amazonaws.com/buxoparadazegu/tinuwaki.pdf
    • http://ninefaniki.rf.gd/83043531097.pdf
    • https://s3.amazonaws.com/gewisetug/twitch_email_address_format.pdf
    • http://rafelisugamiraw.rf.gd/capacitive_sensors_design_and_applications_larry_k._baxter.pdf
    • https://s3.amazonaws.com/novifamigot/how_to_fix_ps4_ejecting_discs.pdf
    • https://s3.amazonaws.com/kevava/79756142703.pdf
    • https://s3.amazonaws.com/tenunud/19827359586.pdf
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_836d291bce964806bbe630397f9ca6b4.pdf?index=true
    • http://fukorow.epizy.com/clarksville_tennessee_weather_report.pdf
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_8d4c425d4fec4bada48d35ff7f0910a5.pdf?index=true
    • http://zuzimekot.rf.gd/beautiful_creatures_book_free_download.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_off0000f2bf.bin
856d344fec5e4f7effc88b13cc69e620f0fe82b18c262dfa4e7a1b6182f352c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BF 5088 bytes
font_01_sfnt_off00010427.bin
380ac89d92e579ef45b84436ea076386bd8255ab33f14db6aa040088f5505fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10427 11584 bytes

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