Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e663bc954dde803…

MALICIOUS

PDF

160.0 KB Created: 2021-02-21 20:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c7af75d42f644d2ef7d6b6e9ae22cb5a SHA-1: b13ba77f253f0eb7a2a4d9f7dea796966a2c4282 SHA-256: 8e663bc954dde803d7338b316871243b7a99feb16438e1610f5c035b6d29bdc5
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. 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 is heavily obfuscated, but the presence of external URIs suggests an attempt to lure the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://maypoin.ru/123?utm_term=what+is+a+mystical PDF link annotation
    • https://cdn.sqhk.co/xolofiwano/eW8hbQN/era_of_celestials_mod_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/jcfijjd/dress_up_party_salon_girl.pdfIn PDF document text
    • https://viwekaxirudadax.weebly.com/uploads/1/3/4/7/134700275/zekegosoxapubupeluva.pdfIn PDF document text
    • https://seruborakumew.weebly.com/uploads/1/3/4/8/134849990/gilarikomolen.pdfIn PDF document text
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/xefifugulakejil.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/Gfhha5Z/rechargeable_batteries_disposal.pdfIn PDF document text
    • http://fastdonwload.space/batubakodevewokulext4swn.pdfIn PDF document text
    • http://rivimebowov.22web.org/android_emulator_visual_studio_2015_windows_7.pdfIn PDF document text
    • https://tugufotekaluxaz.weebly.com/uploads/1/3/4/8/134883762/72f472.pdfIn PDF document text
    • https://mewixaduzikizom.weebly.com/uploads/1/3/4/5/134594829/denojubufub.pdfIn PDF document text
    • http://veletekuti.66ghz.com/91124626048.pdfIn PDF document text
    • https://cdn.sqhk.co/zonigita/ZYjhz1N/alien_swarm_reactive_drop_steam_charts.pdfIn PDF document text
    • http://thelait.pro/wubobenitenuralaxafirokovy9aui.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/tajimipojimo/42976876219.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/crime_reporting_website.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/alimentacion_complementaria_minsa.pdfIn PDF document text
    • http://zefojebenodimu.rf.gd/how_to_access_backup_photos_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/bidart_surf_report.pdfIn PDF document text
    • http://begulazelukej.rf.gd/mamoj.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/c_assembly._loadfrom_badimageformatexception.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_off000220ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x220ED 2992 bytes
SHA-256: 158da89de25e6d5fa0e80af121bf86c05c2473e7e5b9c71ac046585ecc5bc692
font_01_sfnt_off00022b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B98 5056 bytes
SHA-256: 54da49a865d7a809d7b11bf79bfbaa6183e52eb6f7b4cdabe71171a8bd89a8c4
font_02_sfnt_off00023cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23CB9 18216 bytes
SHA-256: 0d98e4e9f8a0e636cf55ba68f32bd78e6e79be23e4fbadffdc3e93d54ce690a1

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