Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2928c97b8f3ab4…

MALICIOUS

PDF

90.2 KB Created: 2021-03-12 07:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 02e4adfafab984349aed0cacab98a22d SHA-1: d50f0f9910a33184948305f7926aab4a6dcafef3 SHA-256: 7e2928c97b8f3ab42c2bd00a403f3a22246270196fa2d62ac8ebf40931b9ff9c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to domains associated with link farms or unknown reputations, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/award?keyword=iala+b+buoyage+system+pdf PDF link annotation
    • https://cdn.sqhk.co/xovinexesun/tIha2cZ/telegram_definition_and_examples_of_metaphor.pdfIn PDF document text
    • https://cdn.sqhk.co/filodomazora/sjdjhxe/56432696921.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/fAhhiiW/dr_driving_game_online_jio_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/EEuidT9/warren_buffett_actor_the_office.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/ggdiiBc/23030272136.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/ibjhhfD/wegurirufun.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/Ujf4gDY/tilinaniz.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/ddji3if/winter_white_russian_dwarf_hamster_lifespan.pdfIn PDF document text
    • https://cdn.sqhk.co/wifuponi/fheZgd5/run_rabbit_run_pink_floyd.pdfIn PDF document text
    • https://cdn.sqhk.co/fefowofuk/ohfVElP/81132456578.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/tesotiwapax/bijizozitiretaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc470597-11f8-4ff0-b201-45e8ab5817b1/15609991643.pdfIn PDF document text
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_78ffa1777ce2493d92e0c72cb4701c1b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/player_unknown_battlegrounds_mobile_pc_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0100276-7f20-4b50-b21d-ed6c03e23150/kclo4_strong_or_weak.pdfIn PDF document text
    • https://9042e326-c85f-44e6-b9b6-0c206471fdba.filesusr.com/ugd/0d2fda_04243b9b9bb94f3abd6b90bc9ac08966.pdf?index=trueIn PDF document text
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_b53a7770573748048c033daa53313a64.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/competitive_exam_questions_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/983c1d55-53ad-460d-a8be-62a1941c62b4/totixafanovizulibukug.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/jay_sean_i_m_all_yours_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/53015246878.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_off0001268a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268A 5444 bytes
SHA-256: c6c57376fe758fb92bc3326aeaa392cfd4abf942eb2dbdc5123f0027f7f463c5
font_01_sfnt_off0001390b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1390B 10196 bytes
SHA-256: 5a7c6d5c8f5599b70395368650ffd8cae3b4af396625ad31fb519265fdbfd1ef

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