Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc52a63572749ff…

MALICIOUS

PDF

85.3 KB Created: 2021-02-11 14:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a21d34d190c481c784c9a751a31733f9 SHA-1: 3002c56f318cf1553794c6e2a824e0b1e3097827 SHA-256: 4fc52a63572749ff9e53d9584c425f0d4e825fbcff58f69e69aaa5d930c74ce3
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_BROWSER_INSTALL_LURE' suggests the document's content is designed to trick the user into installing unwanted software. The embedded URL 'https://leonvi.ru/wix?keyword=backyard+baseball+online+download' is likely part of this lure, potentially leading to a malicious download or phishing page.

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://leonvi.ru/wix?keyword=backyard+baseball+online+download PDF link annotation
    • http://zazuvivilug.iblogger.org/80702816776.pdfIn PDF document text
    • http://debugor.iblogger.org/bimoxifigusopepurez.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/hjviBjf/harvard_business_review_student_coursepack.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/CHgjig7/titan_quest_ps4_gameplay_german.pdfIn PDF document text
    • http://formblckr1.xyz/medefo9qp4a.pdfIn PDF document text
    • https://cdn.sqhk.co/nugofonavuf/h2jd9WL/majesty_fantasy_kingdom_northern_expansion_apk_full.pdfIn PDF document text
    • https://menesifewo.weebly.com/uploads/1/3/0/8/130814293/9cb8b6421745eae.pdfIn PDF document text
    • https://kanunobak.weebly.com/uploads/1/3/1/0/131070574/detuviripozir.pdfIn PDF document text
    • https://sasujenag.weebly.com/uploads/1/3/5/3/135337218/7ea3a9e3e5e44.pdfIn PDF document text
    • https://leximefowa.weebly.com/uploads/1/3/2/6/132680903/3050227.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/dezajok/standard_bill_of_lading_format.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/whatsapp_funny_questions_and_answers_in_tamil.pdfIn PDF document text
    • http://gadojir.rf.gd/sunegen.pdfIn PDF document text
    • http://sujosivetobifir.epizy.com/mugemin.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/60155254248.pdfIn PDF document text
    • http://nadezuj.epizy.com/beautiful_baby_photo_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/60725868003.pdfIn PDF document text
    • http://mujujum.epizy.com/sparklebox_letter_formation_worksheets.pdfIn PDF document text
    • http://desiwafinu.epizy.com/abaddon_ii_regular_font.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 5088 bytes
SHA-256: 98d1b485a3a7a24fc5f71c6a23f42ba3003b96644544a3d49bf3e9b3bba64bac
font_01_sfnt_off00011647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11647 10184 bytes
SHA-256: a7b8f5ac623ff8a98379f0b4695d57edd0d49b53376c55e361df0d7b4452dd2d
font_02_sfnt_off0001393b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1393B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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