Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e738da63081167…

MALICIOUS

PDF

73.3 KB Created: 2021-02-18 04:12:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ce052a39de55fea46cad3d5cd94b1d54 SHA-1: 92975fd1b853c8cc29b399e40970ce3262cfb1cc SHA-256: e4e738da63081167461a580f12c55a67169143c5cd5040f56f619549316fe7e3
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=libro+un+curso+de+milagros+online+gratis In PDF document text
    • http://iuts.space/acustica_fisicaddejj.pdfIn PDF document text
    • https://cdn.sqhk.co/mivivezar/ehejcia/space_marshals_3_mod_apk.pdfIn PDF document text
    • http://axecheat6.xyz/fruits_basket_manga_onlinet6q7i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391909/normal_5ffb32ac89621.pdfIn PDF document text
    • http://smartycredit.info/clash_royale_pc_without_bluestacksj72wd.pdfIn PDF document text
    • http://vbruti.site/vadorivenozulafajurefaku8d1pg.pdfIn PDF document text
    • http://lnstagram-helping.live/mapopuwegevonenuvosigcitc.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/fyDViih/bukanobos.pdfIn PDF document text
    • http://micrometer25bill.site/48675227715xgi0g.pdfIn PDF document text
    • http://gajozemexip.22web.org/lusenosibubezarigiv.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/boxalewijim/birizepobifamuvubazibol.pdfIn PDF document text
    • http://gonoluripep.rf.gd/easy_voice_recorder_apk_file.pdfIn PDF document text
    • http://mafonoxerinomif.epizy.com/fodor_s_paris_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/whatsapp_transparent_latest_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/pobusivetuf.pdfIn PDF document text
    • http://juzatapanosuwi.rf.gd/jotter_monitoring_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/43250667876.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_off0000dd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD91 5340 bytes
SHA-256: 31183f53184a36184891e557b9857aaa275e0c35fb2ab5b7d9ea6577d7ec5ac4
font_01_sfnt_off0000efa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA3 11948 bytes
SHA-256: 25e650cfc890def1b78027d4cd19b012995569edbf2ce69e33814de173f76ce1

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