Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bdde9ebd2689431…

MALICIOUS

PDF

82.0 KB Created: 2021-03-23 02:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: adf0b2a804ee363ed770c39a51e131f2 SHA-1: 59a8c447babf6f65aad58582c8729265bfa205ef SHA-256: 3bdde9ebd2689431a2e3aa3f43e787a4c08c55fb18c0be9484ad82707c92e400
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 0.9990

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://vilenefex.ru/strik?utm_term=heating+curve+worksheet+2+answer+key PDF link annotation
    • http://dibopisol.iblogger.org/kudidovifazipuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_602b0c36ebed0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_5fe99f236032c.pdfIn PDF document text
    • http://pegejoruvufiron.sportsontheweb.net/canon_ir_2525w_brochure.pdfIn PDF document text
    • http://tasigezagu.scienceontheweb.net/95895427055.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365552/normal_5ff52b91bd5ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418762/normal_6007971ed506a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_60001f5927797.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487662/normal_5fc5ed25d2f0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_603b9689f23e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467019/normal_605920793c3d9.pdfIn PDF document text
    • http://mukanoderike.iblogger.org/xobeje.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/first_alert_carbon_monoxide_alarm_no_battery_replacement.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xunudijumo.myartsonline.com/weveziguvir.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/raveretiwufazewofilogir.pdfIn PDF document text
    • http://vafedoba.rf.gd/what_is_the_lucky_color_for_year_of_the_rooster.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/27166436872.pdfIn PDF document text
    • http://kagijido.myartsonline.com/where_is_the_drain_pump_on_a_whirlpool_washing_machine.pdfIn PDF document text
    • http://wiwawilif.epizy.com/katerajaneveda.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/halloween_math_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/81461725857.pdfIn PDF document text
    • http://gawebunopom.rf.gd/what_does_it_mean_if_your_crp_is_elevated.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/dragon_quest_builders_2_island_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/xiforulorajilogil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A5 5324 bytes
SHA-256: 50a486392b51e4d615e6e048019932bb908c8c5c5b19d2ad26423103442df082
font_01_sfnt_off000107d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D2 10604 bytes
SHA-256: 7eb05a8383434217650b426925067b64faeba5952b7e560f0961264091f6c4b3
font_02_sfnt_off00012beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BEB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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