Malicious PDF — malware analysis report

Static analysis result for SHA-256 686ab4b626f1ee85…

MALICIOUS

PDF

102.3 KB Created: 2021-03-22 23:55:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f6c640134f3301191f773422e67061aa SHA-1: 74596be19a4d307b8b98190b5e474155a94d6ab0 SHA-256: 686ab4b626f1ee853f673ccd51b4b56c08cc0be97f1f0455d762fda1511502d9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/strik?utm_term=usmc+drill+instructor+course PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369916/normal_603b91c160175.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/xii3ojb/bopazerasizof.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/idxjjge/kingdom_builders_international_ministries_lancaster_ca.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/hhgcYyo/numofavetabizasusolekadok.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/dZc1jam/3048210660.pdfIn PDF document text
    • https://cdn.sqhk.co/motuwezelu/hhjXSJh/manualidades_faciles_con_papel_reciclado.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/hdzxxmr/retroflag_gpi_case.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462362/normal_5fffbc2ea28a8.pdfIn PDF document text
    • https://cdn.sqhk.co/mokabawimav/ghefLf8/rafuditotoma.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/jijbDie/smart_card_fallback.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/j2LvibL/25876013511.pdfIn PDF document text
    • https://cdn.sqhk.co/nugunexinazo/hdqgchd/3385293556.pdfIn PDF document text
    • https://cdn.sqhk.co/vutenugade/fhejdbz/75947196111.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/XjfggjX/college_road_trip_movie_songs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce2aad00-9172-453d-8177-881e6277976e/which_fridge_is_best_single_door_or_double_door.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf013cb-dd95-4e5c-a06f-6ae070118c44/viwaxij.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/annexure_3_medical_certificate_of_fitness_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/biology_class_10_icse_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/67255581068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95a1b71c-65c6-48f2-b7d5-27e07e4e05e6/fixiwu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001554d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1554D 4868 bytes
SHA-256: 4dec466c58f4898241515b6e27795a9baed0136b9fdf2cb13ee501a45c95d533
font_01_sfnt_off000165c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165C4 11284 bytes
SHA-256: 6692c597dad9a8af40e8cf53a64282d3b1055db346af48941ecaee99f079869d

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