Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d6b53279fa0986…

MALICIOUS

PDF

83.2 KB Created: 2021-03-20 03:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8884bd69c49d595e27efd18df05887c3 SHA-1: 1ab801d39ac8da17beece0caccdca5808aa6f2eb SHA-256: 42d6b53279fa0986f16a41cf2073d0bd62e7ee80aba283b6649af57cf2508421
126 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with a primary suspicious URL being https://lozipotod.ru/123?utm_term=glories+of+mary+alphonsus+liguori+pdf. The PDF structure and embedded links suggest it is designed to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/123?utm_term=glories+of+mary+alphonsus+liguori+pdf
    • http://xidufefonudug.sportsontheweb.net/agrochemicals_handbook.pdf
    • http://lianhua.life/61439293776k4d1l.pdf
    • http://conicppjry.bid/wuxujosajowepatiyhb22.pdf
    • http://vufulilaririvu.iblogger.org/lavejevakaxugifikeparuru.pdf
    • http://frontglass.xyz/scarlett_214_audio_interfacepkgvu.pdf
    • http://ionatr.fun/gumed6r6kx.pdf
    • http://wosutopanoba.mygamesonline.org/comments_and_jurisprudence_on_obligations_and_contracts_jurado.pdf
    • http://nopowajowopu.iblogger.org/38404823836.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rikolesafuwofar/bod_determination_by_winkler_method.pdf
    • https://uploads.strikinglycdn.com/files/3f311e09-36e3-412d-9bc2-5e2983220df0/how_to_write_a_diversity_statement.pdf
    • http://dobemeze.rf.gd/resumen_breve_de_la_obra_lazarillo_de_tormes.pdf
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_570d1d2841e14335b280a6cfa558611e.pdf?index=true
    • https://s3.amazonaws.com/tofizo/75429275599.pdf
    • http://pezamax.myartsonline.com/favuxiwoveva.pdf
    • https://uploads.strikinglycdn.com/files/46200722-8791-4984-a24a-f5fd2bab1819/how_to_talk_about_the_structure_of_a_poem.pdf
    • http://fataragoreb.myartsonline.com/hanuman_chalisa_bengali_language.pdf
    • https://s3.amazonaws.com/satudifin/a_cuanto_equivale_1_8_de_pulgada_en_milimetros.pdf
    • https://uploads.strikinglycdn.com/files/10881031-1c85-4c23-bf08-30e98e0f6e17/born_a_crime_movie_lupita.pdf
    • https://71a5d838-4e22-4830-8da1-7955ec3365f5.filesusr.com/ugd/f2f43e_5ecf7abf648a482c80366df9323995a2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0a58e8d6-0feb-4866-ba55-52e363a6802f/tiladevemabapafo.pdf
    • http://luzeparuzibez.rf.gd/inlaid_sheet_vinyl_flooring.pdf
    • http://jadaxoletigagin.epizy.com/bayes_rule_a_tutorial_introduction_to_bayesian_analysis.pdf
    • https://uploads.strikinglycdn.com/files/9b303721-a87e-4318-b697-586c32ab4916/gubisalugepi.pdf
    • https://s3.amazonaws.com/pigolo/how_to_answer_happy_birthday_in_french.pdf
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_3f292b7004c0463396b6c6cc7c59beea.pdf?index=true
    • 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_off00010675.bin
59ef9b95aea191f01760315dd20c9ca7fc555f4c9ce29bf6d2dd2801f329391f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10675 5588 bytes
font_01_sfnt_off00011950.bin
8773097188533401ed8b9860f01c2bb1f2993ea075432f38c8bd3262e09be35e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11950 11484 bytes

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