Malicious PDF — malware analysis report

Static analysis result for SHA-256 f142c62915b56737…

MALICIOUS

PDF

75.9 KB Created: 2021-03-23 09:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a33f1d1ae9624e828a8efb76f2c017 SHA-1: 5a29bab65c15fd5eaac91b871559cdfc4817b590 SHA-256: f142c62915b56737a0951fb8ca927242c45e61590b5b317092e8f2d67d6d5e92
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one prominent URL being https://soxebez.ru/award?keyword=institutional+capacity+definition+pdf. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack aiming to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/award?keyword=institutional+capacity+definition+pdf
    • http://gladkoe-telo.xyz/family_systems_theory_in_substance_abuse_counselingycchy.pdf
    • http://idealica-italy.site/dyson_cinetic_big_ball_animal_price_comparisonv9olg.pdf
    • http://graatorama.fun/mx_player_web_series_high_reviewifp1a.pdf
    • http://ig-copyrighthelpcenter.com/broadsheet_sydney_restaurants_2019wrdje.pdf
    • http://vorecan.space/sixubadepinumezulsfaf8.pdf
    • http://frut-tree.site/iptv_smarters_pro_apk_patchedpn07r.pdf
    • http://lutunabobofipus.22web.org/ap_calculus_multiple_choice_questions.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kimone/laxefipajujufaseginuk.pdf
    • https://s3.amazonaws.com/ninasivol/noluxopumulukumufilu.pdf
    • http://zobujenogubate.rf.gd/fiwojugidibomeleritinafev.pdf
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_6a837d2f04a041af9f5e31f145d92042.pdf?index=true
    • http://momevoke.rf.gd/50798603362.pdf
    • http://wemojeduxikuzem.rf.gd/91079093188.pdf
    • http://xuwizigev.rf.gd/what_are_the_best_cordless_phones_to_buy.pdf
    • https://s3.amazonaws.com/xisefowu/fulonar.pdf
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_1df4fa4e00844591bec064860a75006c.pdf?index=true
    • http://fosuxono.epizy.com/68819766958.pdf
    • https://s3.amazonaws.com/muwemivumazulax/weekly_weight_loss_tracker_template_in_this_body_i_live.pdf
    • http://sisejarozig.epizy.com/tezipi.pdf
    • http://waxuxeg.rf.gd/supazomabaxidaletudalaw.pdf
    • http://pojifatuvu.rf.gd/33132248826.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_off0000eb77.bin
5729a4946afd012e6cfeac5100ffa796db4d34acab0ae51c81b236f8e126c89e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB77 5092 bytes
font_01_sfnt_off0000fceb.bin
b4d2464c0a3d284221ce2ddafe50720c5d76a194ee492454182385b442e3511d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEB 10912 bytes

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