Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9674bcf8f48fe18…

MALICIOUS

PDF

312.1 KB Created: 2021-02-15 16:26:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2484c0730780d4ff5a48e8a63291ed86 SHA-1: beece58b66b9a66cf8ee71e0752978ceef1c1590 SHA-256: d9674bcf8f48fe18984597e2639dc36836848463c7fec9ffc49aa7d782f9b977
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a URL that mimics a search result for educational materials. This is a common lure for phishing attacks. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9756

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://bologen.ru/wb?keyword=mathematics%20textbook%20grade%208%20pdf%20free%20download PDF link annotation
    • https://lasogevedona.weebly.com/uploads/1/3/1/3/131398076/xulixow.pdfIn PDF document text
    • https://cdn.sqhk.co/xolizoxime/0lgekAA/govesobuxetoba.pdfIn PDF document text
    • https://litufefanim.weebly.com/uploads/1/3/4/9/134901191/2668674.pdfIn PDF document text
    • https://cdn.sqhk.co/wapevenupu/ijjgiie/glory_of_generals2_ace_mod_apk.pdfIn PDF document text
    • http://samyog.ru/hachi_japanese_restaurant_menun9lg9.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/QtV6Rjc/joxokazobezomeja.pdfIn PDF document text
    • http://gufutaca6.xyz/fountas_and_pinnell_running_record_templateph651.pdfIn PDF document text
    • http://copyright-help-report.com/game_resident_evil_4_ppsspp_zipiieah.pdfIn PDF document text
    • http://webdefilmizle.com/1332618837417g14.pdfIn PDF document text
    • https://ninijaliwejito.weebly.com/uploads/1/3/4/3/134350726/01b990ee.pdfIn PDF document text
    • https://suzeziji.weebly.com/uploads/1/3/0/7/130739492/574a7317ddcd2.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/fiwimud.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/tiwivivu.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/84694462864.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/mosiluxuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/list_of_eponymously_named_medical_signs.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/bela_bela_english_song.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_off000482cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x482CF 2400 bytes
SHA-256: e80365ab536789a46925ab6c50a37f7c71144ba72e7785d6c69477004eafd1e9
font_01_sfnt_off00048d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D23 6132 bytes
SHA-256: ba42c6b74ed1217484c347fc6c1f3866411582a2e601b956f7360f2138214758
font_02_sfnt_off0004a1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1F4 13632 bytes
SHA-256: e20e6cd6772aa2839d520ffed9ca7a2213e6250925955719453e0dc226f4485d

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