Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d26cf28500bc9b…

MALICIOUS

PDF

70.2 KB Created: 2021-03-01 12:30:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ca3bb9871282c5f725da61d55208e9da SHA-1: 9070fe17b4561960739abede84f9d45474e25ad9 SHA-256: a0d26cf28500bc9bfc8decbb5d1925539a99f047cf4a81b27216804bcbfc4e08
96 Risk Score

Malware Insights

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

The PDF file contains an external URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure suggest it's designed to redirect users to malicious content, likely 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://baarspo.ru/award?keyword=classic+video+games+to+play+online PDF link annotation
    • http://indohealth365.online/73339276740fhbxp.pdfIn PDF document text
    • http://trellos.fun/port_to_port_distance_appk12qp.pdfIn PDF document text
    • http://wojisub.mypressonline.com/do_cochlear_implants_use_batteries.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460449/normal_5fc9516f8a60f.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/duromax_xp4850eh_4850_watt_dual_fuel_hybrid_generator_with_electric_start.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383572/normal_5fde3eef86022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_60353780e7091.pdfIn PDF document text
    • http://afracheat3.xyz/mekeresogovuxae9q3l.pdfIn PDF document text
    • http://afracheat1.xyz/prokaryote_coloring_worksheeteo6gb.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/how_to_turn_off_airplane_mode_on_doro_7050.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/xazefezokirodiferu.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/lososimap/tazubopena.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/retaxipotuwomigowodak.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/73900139136.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/99241111294.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/8351728682.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_off0000d6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DB 5364 bytes
SHA-256: c3d153b5c6a85c9141187eac22a449190f5574747f56673773800a63af2a8e89
font_01_sfnt_off0000e917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE917 10152 bytes
SHA-256: 1ff37deb5dd78aad19a6c627dcfca537a23e00482168555bc405fdbce7f5e563

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