Malicious PDF — malware analysis report

Static analysis result for SHA-256 a153ffe14f030f46…

MALICIOUS

PDF

76.9 KB Created: 2021-04-30 14:40:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb2e535cd15e0a6e8da7c7170021a299 SHA-1: 5dc5ec70b8d2911e3bdcebc9ff4d2f1386ed90a3 SHA-256: a153ffe14f030f46c12dfd39a4fb43a689ae99531e6c5cfbb41caa457551fca5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that masquerades as a download link for a children's story, but is instead a lure for malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/strik?utm_term=little+red+riding+hood+story+pdf+download
    • https://cdn.sqhk.co/bodorosuzuta/7ijyha8/open_office_free_polska_wersja.pdf
    • https://cdn.sqhk.co/pupevadojas/zigUjeT/befaneronoje.pdf
    • http://bigijawiv.scienceontheweb.net/jadufebax.pdf
    • http://fegokodelaxen.scienceontheweb.net/94582096551.pdf
    • https://cdn.sqhk.co/xemajuvinel/wSifB8C/zunoxubawegewetadux.pdf
    • http://mononorupetajo.22web.org/bugakafu.pdf
    • http://xonitaj.mywebcommunity.org/alter_ego_plus_a2_gratis.pdf
    • http://zibepifutidi.sportsontheweb.net/silabus_osn_biologi_sma_2020.pdf
    • https://cdn.sqhk.co/perigupa/chcc6RS/rukotidomafadij.pdf
    • https://cdn.sqhk.co/buwuvibija/AwvhbJm/81472443956.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://naxepedawizozet.onlinewebshop.net/acromioclavicular_joint_pain.pdf
    • http://xevijojikutep.onlinewebshop.net/bacterial_genetics_microbiology.pdf
    • https://uploads.strikinglycdn.com/files/1710d543-38eb-42a5-a691-a395f2e03994/fapigo.pdf
    • http://nodikaduf.onlinewebshop.net/asrock_z170_pro4s_price.pdf
    • https://uploads.strikinglycdn.com/files/80fd59d9-36cc-4ce4-b471-bf05ff85bb1e/sanupemirek.pdf
    • https://uploads.strikinglycdn.com/files/8f96c05a-4306-40d8-a756-a0ff12a4f90e/baldurs_gate_3_cheats.pdf
    • http://zutaturusix.myartsonline.com/52696925706.pdf
    • https://uploads.strikinglycdn.com/files/b7836d58-c600-46b1-a9a4-f7300e9333b0/figexenoga.pdf
    • http://jojanotesejivi.epizy.com/54941529450.pdf
    • https://uploads.strikinglycdn.com/files/1d5f516a-010a-43c8-a01c-f2a949988941/94263088298.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed1d.bin
6a958eb56da30d536da967858e0ba25a42fc4373cbb890a6e79d5497711368cb
pdf-font-stream PDF embedded font (sfnt) at offset 0xED1D 5436 bytes
font_01_sfnt_off0000ffac.bin
2962d6fe115cdb578a78ad4f753d5caa33298e01408e093e6bd7713f990088e0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAC 10984 bytes