Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41a2f90b88d0ce3…

MALICIOUS

PDF

76.2 KB Created: 2021-02-25 20:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 083fa4af94c7fb056135f5bae2cfa8dd SHA-1: 9c695bcc35bf9a6e0cdb2a8cea10f04b31f6f55e SHA-256: c41a2f90b88d0ce3002d56888a36dd76123e9a917f9d321443b1275f31581a28
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to contain keywords related to technical issues, suggesting a lure for phishing or malware delivery.

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://leonvi.ru/123?utm_term=kindle+4+factory+reset+not+working PDF link annotation
    • http://serviceforyou.site/263342482558lh32.pdfIn PDF document text
    • http://websporizle3.com/77675380344arnx3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483851/normal_60066498ad79a.pdfIn PDF document text
    • http://deemonatrafik.xyz/amain_performance_hobbies_retail_store_chico_ca346mn.pdfIn PDF document text
    • http://kovuzaxaf.medianewsonline.com/where_is_the_limit_switch_located_on_a_garage_door_opener.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413465/normal_6024f39e0c9e4.pdfIn PDF document text
    • http://romeita.space/lelare3psnl.pdfIn PDF document text
    • http://dkmz3.club/process_flow_chart_template_xls_freeyp4kf.pdfIn PDF document text
    • http://vnds-super.space/fulevukegojeliwixotj4cvq.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/construction_project_management_jobs_nyc.pdfIn PDF document text
    • http://erkutungotu.com/25364226952zloj0.pdfIn PDF document text
    • http://resimpub.com/71925401007yi787.pdfIn PDF document text
    • http://robinmani.site/vajuwofofesopimulizixiluhjz2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kivozusemu.atwebpages.com/symbol_ls2208-sr20001r-ur_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/84363035997.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/day_of_the_dead_mask_template_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/29179630665.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/52278314844.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA1 5504 bytes
SHA-256: 94f8e3b9deaec163c5b43849c089cf0b9fda6f93d3af577ddaa55b2617f387fd
font_01_sfnt_off0000fd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD96 11288 bytes
SHA-256: 57dc49b9cf73511d288e666a68d80beb67ef57a64f49438bc6f5857a3d39ea33

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