Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1532bbc5dcbba52…

MALICIOUS

PDF

82.3 KB Created: 2021-04-03 20:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4fbdb774b9b79d71f0d0f37415c9448a SHA-1: 727fd1c94959e7d0bdbd692b9090fe06ebbd5a86 SHA-256: f1532bbc5dcbba5250c70131c1671e18a09f92ed24a7fbacb8524684246605d9
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://leonvi.ru/123?utm_term=antivirus+free++for+windows+8+avast PDF link annotation
    • http://xazonojader.mywebcommunity.org/kixuno.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/fujjiXN/obstacles_synonyms_starting_with_p.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/hjhioBY/73553824920.pdfIn PDF document text
    • https://cdn.sqhk.co/sifujubagis/dgf18Bw/old_dog_bright_yellow_vomit.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/LEgfiec/best_gunner_build_deep_rock_galactic.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/r9hiwgh/gujogubalipudobolotaxe.pdfIn PDF document text
    • http://roborezi.iblogger.org/poreselikabapolekoki.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/bhhqjc8/true_skate_glitches_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/bghEojg/ted_baker_dresses.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puxabilaxomim.rf.gd/ardhanariswara_stotram.pdfIn PDF document text
    • http://gatujezore.rf.gd/all_animals_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/79739652869.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/retail_marketing_notes.pdfIn PDF document text
    • http://vadibezodaxilez.rf.gd/iit_jam_organic_chemistry_notes.pdfIn PDF document text
    • http://natizuf.onlinewebshop.net/adding_subtracting_and_multiplying_fractions.pdfIn PDF document text
    • http://bojisunizinop.epizy.com/52712061463.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/batman_return_to_arkham_asylum_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/37767036822.pdfIn PDF document text
    • http://nisogifamesada.epizy.com/dream_theater_pull_me_under_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/how_many_carbs_are_in_the_nacho_fries_at_taco_bell.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/resumen_de_la_obra_aves_sin_nido_segunda_parte_por_capitulos.pdfIn PDF document text
    • http://bevoxoxoj.epizy.com/how_to_turn_off_a_nintendo_switch_pro_controller.pdfIn PDF document text
    • http://tisigivikevutik.rf.gd/how_to_pronounce_ed_in_english.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BB 5204 bytes
SHA-256: 8e910184e081427385e6428feaee1e0637edaf528d00fb666026acdb42dc43de
font_01_sfnt_off00011897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11897 10324 bytes
SHA-256: 3debc913b928e694b8886f6be253997f9dc1cb777c8b95df7f1e465f0c354ea9

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