Malicious PDF — malware analysis report

Static analysis result for SHA-256 af009f9c96f9df21…

MALICIOUS

PDF

77.5 KB Created: 2021-04-22 17:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1846b5b806a861e7bfe2957de0882698 SHA-1: 7d834c171c288de8df69f99046cabc19ab5cde5d SHA-256: af009f9c96f9df21f512ff5bd5be70e8e917fcba4daa9d95cc4976db5e3505aa
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to a product manual, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/strik?utm_term=sangean+rcr+5+manual
    • http://labifovejes.mypressonline.com/fakobikujapejokokaman.pdf
    • http://siwivelijutore.medianewsonline.com/second_conditional_exercises_with_answers.pdf
    • http://vumexovuvelafe.medianewsonline.com/fasawevafari.pdf
    • http://mastera-saydinga.ru/74925908644rxljw.pdf
    • https://vidatizotasajad.weebly.com/uploads/1/3/4/0/134017381/vejumarowesi.pdf
    • http://dunuzun.iblogger.org/sesamet.pdf
    • http://wiinorama.fun/43547404876r6434.pdf
    • http://shoes-storie.club/how_to_pair_denon_receiver55eps.pdf
    • http://tryplafond.xyz/90098801358451oo.pdf
    • http://nicepics.xyz/gagomezelotekutidulanulrwgez.pdf
    • http://phulop.store/milafomaigtuo.pdf
    • http://rajukilodagoje.mygamesonline.org/rational_numbers_worksheet_grade_7_with_answers.pdf
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/zonefew_fuzomekawe_mugizudu_wofivasopadexid.pdf
    • http://fudazozotakaxal.mywebcommunity.org/venomi.pdf
    • https://supokiroxuleniv.weebly.com/uploads/1/3/1/6/131606692/gobafijuburumoka.pdf
    • http://pirunumilusarib.sportsontheweb.net/53755096061.pdf
    • http://segway-wheelchair.ru/compound_sentences_worksheets73tsn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vazojebimuvap.epizy.com/93403357018.pdf
    • http://negumigimewote.onlinewebshop.net/les_adjectifs_demonstratifs_cours.pdf
    • http://xowobovu.myartsonline.com/what_are_the_three_genres_of_poetry.pdf
    • http://teramadobowakin.epizy.com/metro_map_in_bangalore.pdf
    • http://lukafimagog.atwebpages.com/xojufukefipizoji.pdf
    • http://puzekuzabi.epizy.com/criminal_psychology_ray_bull.pdf
    • http://duzavito.epizy.com/high_wizard_farming_guide_ragnarok_mobile.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_off0000f0ad.bin
cf507327137edde2a36545c0c4e2d3bd2c7b59054784919c37eefef3fb7486e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 5168 bytes
font_01_sfnt_off0001022a.bin
5fa63cf6c01c10f1a8cc355e85568d8b258eccb3775558e378ffced6f379044c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1022A 12612 bytes