Malicious PDF — malware analysis report

Static analysis result for SHA-256 d954ffffd3406553…

MALICIOUS

PDF

81.7 KB Created: 2021-04-07 22:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3b3cd024bf4a4defd376e78c60d70882 SHA-1: b94a4b5473910cd6ff35eb9d6b2be6013e0b8278 SHA-256: d954ffffd34065539a52227c438831c413b30dd602eb98735d505dc1d0f1dcaf
104 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. It uses an invoice-themed lure. 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 0.9998

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://baarspo.ru/123?utm_term=gta+5+online+solo+bunker+guide PDF link annotation
    • http://rejawulomov.mywebcommunity.org/82008920177.pdfIn PDF document text
    • http://mexodinawikil.iblogger.org/16306861101.pdfIn PDF document text
    • http://mevilesiroxivo.iblogger.org/muronilojopojolafewokuju.pdfIn PDF document text
    • http://dikerulaba.22web.org/how_to_become_a_millwright_apprentice_in_ontario.pdfIn PDF document text
    • http://maloxibosuveviz.iblogger.org/kebamanajovaxoto.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/zesotat/longman_dictionary_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/94229852822.pdfIn PDF document text
    • http://sapakebozo.rf.gd/invoice_template_for_freelance_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/61366007903.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/nufedikifepakukemuniwapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/65908235526.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/13836627021.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/casio_wave_ceptor_5052_set_time.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/biohazard_4_apk_english_version.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/51637664934.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/sight_singing_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/66345540078.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/76360482288.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/alternative_centres_of_power_questions_answers.pdfIn PDF document text
    • http://fafinonez.rf.gd/history_of_watchman_nee.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_off0000fbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 5352 bytes
SHA-256: e51a1e2c400f42b1fef342a7f17360bd906bc7a2fc167f7b7dd28908514aa97c
font_01_sfnt_off00010e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E14 12628 bytes
SHA-256: d39470ad14888aa28c2944082a168d691f315e5b6a9254db1e0566b091d1c06f

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