Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcafdec09270aece…

MALICIOUS

PDF

88.7 KB Created: 2021-03-09 10:21:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1f748675249df9cf320e58d56cf2e0e0 SHA-1: 3d0360dbcc63f02c55513dddd08c9cc9c69051cf SHA-256: dcafdec09270aece77f4a958ddfa95706cb31a17a08ee7c8fa6b5d7eb2fb7e94
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 0.9997

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://dafemum.ru/wix?keyword=waves+and+sound+worksheet+answers+with+work PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443356/normal_6001c398d4220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446275/normal_600bf88fec309.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/ygiu9ij/sepenijegipi.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/gc4gigd/telecharger_logiciel_schema_electrique_maison_gratuit.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/best_short_stories_for_high_school_from_other_countries.pdfIn PDF document text
    • http://rebibedo.mywebcommunity.org/asme_b31_3_free_download.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/keurig_2.0_k_carafe_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427528/normal_60100555b8cd0.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/gc4jhDa/2141145404.pdfIn PDF document text
    • http://bafedudovodamo.medianewsonline.com/how_to_identify_ford_transmission_by_vin.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/how_to_improve_sign_language_interpreter_skills.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/4de072d7-acc0-4a6f-ae86-c34c5d3a1ad7/percy_jackson_sea_of_monsters_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/what_is_the_purpose_of_corporate_social_responsibility_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/reporter_amharic_newspaper_sunday_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cb98b71-33eb-4f75-ab52-8a6bf86018ee/63951859032.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/rawevar.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/what_does_blinking_red_light_on_thinkpad_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/antichrist_movie_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/jixinetonikibajeximudibot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2887b24e-0e16-4b75-9927-4e605705c979/zuzobasodedakab.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001090e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090E 5112 bytes
SHA-256: e242a7889ea081ee0cf3529b7393af5557fa6340a2266d8ee3f694fc34e0267c
font_01_sfnt_off00011a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A88 10624 bytes
SHA-256: 7ddcae0dc0bb5177597b9f4430e51ea0863ed78c6d19316b8c7107e0bb908c5f
font_02_sfnt_off00013f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F1F 16376 bytes
SHA-256: 2e780e2f295ece4d21cc22d095137f756dbb6d5c5e7da6aa70fdea8e5cc1ef35

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