Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5c5cdccc0eb435…

MALICIOUS

PDF

198.3 KB Created: 2021-03-12 12:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d0882381603de2657470e56d15289e15 SHA-1: bfc868d54a2a051ad613d4469193b097eef8e7d3 SHA-256: ae5c5cdccc0eb435c116cfda105b15332b346ac629a54319595c787fb0cea4d4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a malicious PDF. The document body, though heavily obfuscated, contains text related to film theories and the wkhtmltopdf application, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://fokemale.ru/wix?keyword=the+major+film+theories+an+introduction+pdf PDF link annotation
    • http://lijasojaxivura.22web.org/best_outdoor_digital_tv_antenna_150_mile_range.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5fcf3c269131b.pdfIn PDF document text
    • http://kugewezebuvigiw.mygamesonline.org/50771082044.pdfIn PDF document text
    • http://tizakeguwowil.22web.org/t_shirt_order_form_templates_word.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/what_should_be_included_in_an_outline_for_an_informative_essay.pdfIn PDF document text
    • http://fenofojerafama.22web.org/wewuluges.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381344/normal_5ff2f75cb613b.pdfIn PDF document text
    • http://bovibuvebus.getenjoyment.net/war_of_the_worlds_2019_tv_series_episodes_season_2.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/74207452943.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/jedadokuti/59601107864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fcae76f-e23c-49ec-9978-928ace43bc92/fracciones_que_se_obtienen_de_la_destilacion_primaria_del_petroleo.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/paloma_tankless_water_heater_code_c4_76.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/how_much_does_it_cost_to_replace_a_nissan_transmission.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/implementability_of_clinical_practice_guidelines.pdfIn PDF document text
    • http://temodorofeg.atwebpages.com/66676575794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffbf158-534c-4073-a38f-9af4a955e538/sumawozimupadojiner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf662b27-e251-48c8-9908-f09589837b77/creswell_research_design_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/42388359965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfeadd90-5910-47be-8b66-72cc366b11b9/easy_ukulele_songbook.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_off0002d041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D041 5420 bytes
SHA-256: 9fc0004812e77989acb8326c50dd809f2365e6ace483d42a01faa5b2bf0491f0
font_01_sfnt_off0002e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E285 11992 bytes
SHA-256: 703b8deb8f327d991e9d1f5e5c29ad128833da6da62ceade2753fe7dceb0ee8c

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