Malicious PDF — malware analysis report

Static analysis result for SHA-256 9302a4cf394ad7bf…

MALICIOUS

PDF

64.8 KB Created: 2021-01-01 20:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cc299533d1da82e7c9af5dc21b506f90 SHA-1: bc360c237cfc510038dfacd81002fd65e7391962 SHA-256: 9302a4cf394ad7bf454577901f3597358b0b69487d23c886528d41de43dfe372
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to '11th science notes maharashtra board', indicating a targeted social engineering attempt.

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://traffking.ru/strik?utm_term=11th+science+notes+maharashtra+board PDF link annotation
    • https://cdn.sqhk.co/nalomuxe/5hjcIBd/texewokumasoguxuvuwimege.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401518/normal_5feb4ce96d734.pdfIn PDF document text
    • https://cdn.sqhk.co/vibifexode/mjezJhc/endless_space_2_battle_tactics_cards.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413465/normal_5f975f942b971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_5f9cb76a18db1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380082/normal_5f8f96edc7b24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420748/normal_5fbbfff7c2cb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5fb49b4a29435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417988/normal_5f9722b61cde3.pdfIn PDF document text
    • https://cdn.sqhk.co/dadakafopina/MhfymaQ/retro_fridge_freezer_white.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446789/normal_5fada0321ab7e.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/gcPUEFF/top_ten_rap_songs_right_now.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c68a35e-2063-47a9-8c0f-3d695f550a50/leccin_7_recapitulacin_marta_se_le.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b1d56c0-9f72-48a2-a14a-67a582267d4a/11713143623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16cc5c69-47d2-4dba-bae8-6be560034bd9/dui_therapy_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ca37b5-a324-4605-8ddf-077ef296a73c/71712640235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda2e1f9-12a2-43da-ba4d-38b044cfceb0/wow_chromie_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC342 5244 bytes
SHA-256: c7baa98eb24aa1dcbc1c3df42827a0768361d821d8e88ebe13f41baf01d79028
font_01_sfnt_off0000d4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E5 9796 bytes
SHA-256: 8f1ff8b007a2e27a1802b57b3a4e5114110d238af59e436706c13ddcce406e95

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