Malicious PDF — malware analysis report

Static analysis result for SHA-256 3692c75d98d687f3…

MALICIOUS

PDF

83.9 KB Created: 2021-02-27 00:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: fd9fdc957b6db645be4d4fed023ad528 SHA-1: e04c1747f2e78db02a53f359ecb12caf9dbd6f14 SHA-256: 3692c75d98d687f3a18001944b18bcfc94b8195de6bdaf7f670bd9f479d42219
156 Risk Score

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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/123?utm_term=what+is+the+eagle+scout+charge PDF link annotation
    • http://tlgfree.xyz/likegegotebakares3n6hm.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/mevosegepim.pdfIn PDF document text
    • https://rilodogalaru.weebly.com/uploads/1/3/4/3/134398508/10e2d578.pdfIn PDF document text
    • http://todayshop.website/kesutisupege6by65.pdfIn PDF document text
    • https://maxijegiv.weebly.com/uploads/1/3/4/1/134131269/d48ded95c327799.pdfIn PDF document text
    • https://vusejamujaled.weebly.com/uploads/1/3/1/4/131437056/2608210.pdfIn PDF document text
    • http://tuxesimufimiti.mypressonline.com/cnb_magisterio_de_educacin_infantil_bilinge_intercultural_-_completo.pdfIn PDF document text
    • http://tgesheff.xyz/powuzomesupax9tznt.pdfIn PDF document text
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/vofulimefarilir_naliruva.pdfIn PDF document text
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/wofirimewef-pexonomenid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xexojonorowo.epizy.com/wesuwexitovesifenipowu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/68711091157.pdfIn PDF document text
    • https://s3.amazonaws.com/zowibatev/exclusive_beat_license_agreement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/fojixuwizab.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/5325364864.pdfIn PDF document text
    • http://nejarisiwudu.atwebpages.com/ray_bradbury_i_sing_the_body_electric.pdfIn PDF document text
    • http://kamiwivexa.epizy.com/uc_browser_for_android_2._3_6.pdfIn PDF document text
    • http://dibulazovila.rf.gd/nevizulawurakov.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 5072 bytes
SHA-256: 77c3a9e22f9fd1c7cf9783f5034ed35978af1b3ef5b3f7ce2b5accc57a550e52
font_01_sfnt_off00011d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4C 10952 bytes
SHA-256: 07a776ea4dc4ad12fd3d0440c3723b3be79ce6faf3b149c82cd35aea307e2e67

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