Malicious PDF — malware analysis report

Static analysis result for SHA-256 34aff017364e8963…

MALICIOUS

PDF

73.7 KB Created: 2021-02-26 18:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 068219ebe35119959f28c440f414ca28 SHA-1: 3ba95f223457d4da74404bd6f4ce5deae81fec4b SHA-256: 34aff017364e8963c247b951e65d8bffd5e0bd7169c7dbea0fd0d58fdb1fb7be
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=blackstar+id+core+stereo+100+guitar+combo+amp PDF link annotation
    • http://poxumanavofeboz.scienceontheweb.net/syma_s107_s107g_rc_helicopter_charging_instructions.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/10293689798.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/how_to_unclog_your_vacuum_hose.pdfIn PDF document text
    • http://kolomata.ru/what_is_the_meaning_of_accommodation_bill_of_exchange949m4.pdfIn PDF document text
    • http://ketrovk.xyz/chadariya_jheeni_re_jheeni_song_320kbpsvfgrx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484154/normal_5ff194d1e582a.pdfIn PDF document text
    • http://timinome.getenjoyment.net/govejapar.pdfIn PDF document text
    • http://beach-fruit.fun/pewakedibiud60.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/what_season_of_vampire_diaries_did_elena_and_damon_break_up_in_real_life.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/wakamosaxamugikamafi.pdfIn PDF document text
    • http://korogesubelokut.mypressonline.com/63605872717.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/15151081891.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/house_of_spirits_tvb_ep_1.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/95089183209.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/27439762382.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/natekaji.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/78130052961.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/call_of_duty_android_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/dometic_air_conditioner_instruction_manual.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_off0000dfd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD4 5840 bytes
SHA-256: 14620298d937bed1f793d019be4ef89a70052ecd41e82b6dcaabd5ed16ce5504
font_01_sfnt_off0000f3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A4 11464 bytes
SHA-256: 1e9f3ad707e1e5f8e278b4e94c776d8efb05a615561154c37df9b76f4b68ba7f

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