Malicious PDF — malware analysis report

Static analysis result for SHA-256 e607e685092e6cf9…

MALICIOUS

PDF

429.0 KB Created: 2021-03-12 13:22:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: fd1c1e70757ad7cc0ea7cdfec32cb8dc SHA-1: f596d873afe1a9508814ab299fb72877f0c17ab2 SHA-256: e607e685092e6cf96696bb0f4bc6f36d55379353aba976b67df77cf501352f9b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs, such as 'https://bologen.ru/award?keyword=practice+of+brahmacharya+pdf+download', suggests the document is designed to redirect users to external sites, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9215

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/award?keyword=practice+of+brahmacharya+pdf+download PDF link annotation
    • https://cdn.sqhk.co/vavapezami/iejc1gj/clash_of_clans_download_for_pc.pdfIn PDF document text
    • https://lomixefewagad.weebly.com/uploads/1/3/4/5/134592496/tovokivoxetabor-misawivetum-ropivinuwu-lixelipojazos.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/2jeRjjG/hero_xpulse_200_rate_in_nepal.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/lifYhcY/wizard_of_oz_witch_on_bike.pdfIn PDF document text
    • http://lopitimew.mygamesonline.org/how_to_set_hd-1688_clock.pdfIn PDF document text
    • https://kimukotepasa.weebly.com/uploads/1/3/5/3/135329918/berigamatupem-dosowivipuni-jigikuxuled-zolupe.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/jl3hjjd/exothermic_process_and_endothermic_process.pdfIn PDF document text
    • http://tavafotuzefox.sportsontheweb.net/12_days_of_christmas_lyrics_printable.pdfIn PDF document text
    • https://sobidoduwipiver.weebly.com/uploads/1/3/1/4/131406433/7e28f6b.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/agdXzru/64456184042.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/media_essentials_a_brief_introduction_3rd_edition.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/tevigotu/samsung_q7_65_inch_manual.pdfIn PDF document text
    • http://gipenebome.epizy.com/50133220220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4bbf2a-7cad-42c8-b4ff-ca29b208e5a6/47150499070.pdfIn PDF document text
    • http://vaniginisawiv.rf.gd/93187343353.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/catwalk_song_djpunjab.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/35781967640.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/bully_game_compressed_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66fd74e7-42e4-4063-8b77-e686743aff0c/how_to_put_x_in_a_calculator_ti_30x_iis.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/97279632623.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_off00066aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AEE 5552 bytes
SHA-256: 6b26c0c51ef773614e0a35c4ccc0041c5a11fbf1a41ea81e94cca775ee636ad0
font_01_sfnt_off00067db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DB2 10688 bytes
SHA-256: a1108e9ff8476e44a828fcf0c028970d16c15b8d70f503c24e15eb8eebc34c87

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