Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bf51566063382f…

MALICIOUS

PDF

81.7 KB Created: 2021-02-10 06:29:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8c44d026c56f7362137554a78680dae2 SHA-1: 2bfa0f7916d81aedfbbb4203f1513ee29e281a75 SHA-256: 88bf51566063382f7daa454d02a1e073a76e79d81d5bcd6b49237a9f17550271
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, specifically as a phishing or trojan variant. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wb?keyword=brian%20tracy%20podcast%20free PDF link annotation
    • http://marafonsport.site/arc_low_back_painy6kk7.pdfIn PDF document text
    • http://vorecan.fun/61394345404g2y7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_60226177690ab.pdfIn PDF document text
    • http://businessoutsourcing.org/smart_guides_indesign5bedt.pdfIn PDF document text
    • http://trixy-matrix.space/xajexopuwefobakavipijla55.pdfIn PDF document text
    • http://mmmmmme.space/81842808835fyrpl.pdfIn PDF document text
    • http://antinomi.design/18217291782kqc19.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
    • https://s3.amazonaws.com/vatosolikijike/82690010882.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/57696437657.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/arum_kanathe_adaar_love_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/sifejugenewipugov.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/iris_kina_grannis_piano_sheet_music.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/the_game_rapper_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/beats_battery_life_android.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_off0000f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 5056 bytes
SHA-256: 300c63922589727a3ecc97ace352d3f94e7457e246c1f037f34dd130deb59c23
font_01_sfnt_off000105cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CF 11036 bytes
SHA-256: fc63f9f04d84fd68739044112a36986a7538e4805b2ffd47d74d23c4314ea08a
font_02_sfnt_off00012bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB6 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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