Malicious PDF — malware analysis report

Static analysis result for SHA-256 828f98f24b4eeae8…

MALICIOUS

PDF

78.0 KB Created: 2021-03-04 12:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e1c5f60e65857f566d4260c46e0538f8 SHA-1: 4399d49d18b3864af1652106ae2752ad3ed0d6c2 SHA-256: 828f98f24b4eeae8851dd307f57fb0dd17a888312359431e21ef5a2e3b3d994a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI was found pointing to 'https://seumenha.ru/award?keyword=charles+capps+ministries+podcast', suggesting a phishing or credential harvesting attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of an external URL and the malware detection strongly suggest a malicious purpose.

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
  • 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://seumenha.ru/award?keyword=charles+capps+ministries+podcast PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391326/normal_600b5ab8b05a2.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/ihgeDon/76360573399.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/whirlpool_dishwasher_model_wdf520padm7_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_6036f49ada81e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_6025401f53a81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401714/normal_5ffdb0baba485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494165/normal_5feda08297320.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447086/normal_60011c7718737.pdfIn PDF document text
    • https://cdn.sqhk.co/bofogarabu/jgfjeTq/vamekupekevepam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482206/normal_6004956e73e31.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/gi6pigu/avg_mobile_antivirus_security_pro_apk.pdfIn PDF document text
    • http://pumaguli.scienceontheweb.net/74028148018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_60097a5e46007.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/qVhanhc/muntaz_halilintar_wallpapers_4k_hdr.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
    • http://dokudaruriwiv.atwebpages.com/black_flag_cordless_bug_zapper_review.pdfIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/batman_killing_joke_comic_free_download.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/pmbok_guide__sixth_edition_and_agile_practice_guide.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_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 5124 bytes
SHA-256: b081ce4650692412a52ed393d2f0bc6603cb21a760973fbb7699b953a16a837e
font_01_sfnt_off0000f9de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DE 10240 bytes
SHA-256: 72242a09b85f8b1751eae4056461c6c5e32a6f91a7a0d0b9812458f076e9ce0d
font_02_sfnt_off00011cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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