Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8cb5a2d7eb755c…

MALICIOUS

PDF

90.7 KB Created: 2021-02-17 07:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e7aabd3459d855afcaaece7ff776e99d SHA-1: fbf4397459ce6e4c2bdc8add7facb20122cd69e0 SHA-256: 5d8cb5a2d7eb755c62ecb8e285d8dd96cb42b37aa37655efa63aebd41666e1b8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing-related website. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'ny democratic primary 2020 delegates', likely used as a lure to entice users to click the malicious link.

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://baarspo.ru/wix?keyword=ny+democratic+primary+2020+delegates PDF link annotation
    • https://cdn.sqhk.co/kitujesijak/QjjB9KE/hockey_goalie_shot_tracker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419642/normal_60008ff00d606.pdfIn PDF document text
    • http://bugesawuterodam.iblogger.org/fafujagi.pdfIn PDF document text
    • https://cdn.sqhk.co/lixejudazeza/bdjgjdx/53075241237.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/idUu1jd/15414259764.pdfIn PDF document text
    • http://dorightpress.com/81269764367dxls0.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/jojitagifuva/collage_photoshop_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/31277381191.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/xupujeva.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/mukajisobefifon.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/original_wizard_of_oz_book.pdfIn PDF document text
    • http://godidab.epizy.com/widejijupudaxuxuwulif.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/bike_race_free_top_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/nosavurolos.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/barriers_to_physical_activity_questionnaire.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB7 5740 bytes
SHA-256: c49d9df5fb3a618bd90188ae25bcd24057c736e8f2f3d4c9f9634ebbe5b0706e
font_01_sfnt_off00012338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12338 10760 bytes
SHA-256: 8cb4a50525a009c053395d231ea80c530907d1efb9c164494738e01b2b760fb3
font_02_sfnt_off0001481d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1481D 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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