Malicious PDF — malware analysis report

Static analysis result for SHA-256 778e4f9e3edd3993…

MALICIOUS

PDF

117.5 KB Created: 2021-02-24 08:28:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 14131261c3f1abe24082ab9adcb5a980 SHA-1: 95042c151d7252ddb51cd866196d3eb01b02f99d SHA-256: 778e4f9e3edd39932225d75545c22408a860bf6ccb031da1243a4518a0799619
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=nj+transit+bus+fares+2019 PDF link annotation
    • http://nnorm-id.com/giruxigupusakinotobul5kklk.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/f2jq4ge/drunkn_bar_fight_multiplayer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496616/normal_6007fd6e837d8.pdfIn PDF document text
    • http://normab-id.com/jufebalitovabiruxexegegzz2i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454289/normal_5fc8c63ed1c36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421471/normal_600177cc3b389.pdfIn PDF document text
    • http://amorexpo.com/wulomijugafokebebrlc6.pdfIn PDF document text
    • https://cdn.sqhk.co/mesodimeduje/i1geheF/fojemuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421049/normal_60266c61f38ef.pdfIn PDF document text
    • https://cdn.sqhk.co/samivegin/d3thcig/banana_kong_2016.pdfIn PDF document text
    • http://connexion-amelii.xyz/66907737143l3ulj.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/ritoma/vudezebeledezom.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/22934742989.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/xamarin_forms_binding_source_reference.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/jenifamizetapixesenaxumev.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/46746113441.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/fegagesakebewagab.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000174e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x174E1 5168 bytes
SHA-256: 1fc5d86020b84413a220e3ba319c18d6dde5e0923ec0581d4242cf9da2031391
font_01_sfnt_off0001867a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1867A 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off000191dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191DD 11836 bytes
SHA-256: b7e9df47ecb9d4460d43a79f62cd97ed06555c73a616b7b811e0462c23a8d515
font_03_sfnt_off0001b9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9F8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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