Malicious PDF — malware analysis report

Static analysis result for SHA-256 725c714b30b105ed…

MALICIOUS

PDF

68.1 KB Created: 2020-11-30 05:45:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 86626fbd0c90cd0ec17a75f3a1329eb4 SHA-1: 932918c744e3342bae9d74dccbb3dd912f15f82f SHA-256: 725c714b30b105ed30f2833ac2b99b81909be75decfe6ad51925101c69b7e231
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 0.9997

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://traffmen.ru/strik?utm_term=dynamic+vs+static In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403938/normal_5f93a7212f38c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f97d2b6e72b2.pdfIn PDF document text
    • https://fopezifu.weebly.com/uploads/1/3/4/7/134717551/vavufarexogovora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f9f087982c91.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/vatelunezesore-rodarisuxuwejux-lugolupunu-sazuxirudu.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/dazuxujepov/exile_battle_royale_apk_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0b654c0-f42d-493b-a6fa-b8b3b6e1dbab/anubis__hus_sson_1_sidste_2_afsn.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/13722936250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/216963fb-aeb2-4680-a377-e1be7161bf37/wufevusunudofa.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/wemilamofuluxewowoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b023880c-05e6-4f7d-b4f0-555f45b9a3d8/tusudukizerelikaman.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC371 2912 bytes
SHA-256: 6455fa5b37db05830dbc76a369fa136f970a49e752e8eca93cac0febc7052f8c
font_01_sfnt_off0000cde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE2 4980 bytes
SHA-256: 0b7189f2b1d68d2fc47178fcac94b0d99c99070f7d1641a198a3030f7d80f8e2
font_02_sfnt_off0000ded8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED8 11252 bytes
SHA-256: 60094b066fcd7aa4186857abe2b14933c7fc5ce1a65d1964167ea14d375a1b32

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