Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d439d1f261721b…

MALICIOUS

PDF

73.7 KB Created: 2021-04-30 03:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d86306a1c34998f9de00966915f003bc SHA-1: 5a96dbfbe4104d2aecbd039f1f0d82dc2b8f3795 SHA-256: 42d439d1f261721bb260b2be981d1147b4c6ece0432095621b1ccfca28f87386
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://fokemale.ru/strik?utm_term=how+to+change+oil+on+toro+6.5+mower PDF link annotation
    • http://dvestideyli.xyz/painting_with_a_twist_orlando_hunters_creekzmo3l.pdfIn PDF document text
    • http://inostrana.com/gravity_falls_season_3_release_date83pcu.pdfIn PDF document text
    • http://ejinaya.com/vanity_fair_magazine_book_reviewsxuniq.pdfIn PDF document text
    • http://mosdendy.store/warhammer_quest_2_walkthroughwfo2p.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://olymptrade.buzz/minemowisesegasarepewitdzox7.pdfIn PDF document text
    • http://m-laskin.ru/742458055574tt58.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2cc935b2-b854-4d3d-8499-e3bac5ec7384.filesusr.com/ugd/2e82fc_b9221f5a13544776b79b8acd0f51242e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0c30175-0bed-4134-a354-a2da91ce4b18/clasificacion_derecho_civil.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/block_diagram_reduction_in_control_system_using_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/5103973569.pdfIn PDF document text
    • http://nawopadawejiw.epizy.com/what_religion_dominates_japan.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/22824572736.pdfIn PDF document text
    • http://sogirexulurika.rf.gd/current_affairs_april_2020_adda_247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7205c876-19ad-4dcc-8195-396a2d65de9a/42311638352.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/61040622726.pdfIn PDF document text
    • http://zapesuxeliribi.rf.gd/31316864804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b653ca4-1246-47e6-a6f1-92a6c8ea3efa/hamilton_beach_brewstation_12_cup_how_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c8ee34-c084-4419-a4c0-657f6504a4cb/how_to_clean_hotpoint_oven_glass.pdfIn PDF document text
    • https://054d5c26-596f-48a3-87a7-0fc79031e5db.filesusr.com/ugd/599026_bc486a7658e843649235ef3f6ab6a9e5.pdf?index=trueIn 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_off0000e40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 5396 bytes
SHA-256: c97a12f99c85f68465a46d42bdf4b14db68f64ea34b0d664e032c77342b55174
font_01_sfnt_off0000f65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65B 10276 bytes
SHA-256: 2808d87728fde3eed96b945306cef1de5c9bab97373e99ca69cc3eb1f4f226d3

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