Malicious PDF — malware analysis report

Static analysis result for SHA-256 450ad4bef02d2608…

MALICIOUS

PDF

77.0 KB Created: 2021-03-20 08:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba061006be5df343a21a08590e8f8c36 SHA-1: 7b6e40272e617695fe84765035db83d2ea43b0db SHA-256: 450ad4bef02d260892a854b8fcce6f19661b928e08b7df11270a7f0230ff6bea
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or a secondary payload. The document body, though heavily obfuscated, suggests a lure related to educational content, aligning with common phishing tactics.

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://dafemum.ru/wix?keyword=choosing+the+right+word+unit+4+level+f
    • https://cdn.sqhk.co/govizanorev/gmicbja/xobavotoja.pdf
    • https://cdn.sqhk.co/genizataxom/4sdL6ja/my_love_make_your_choice.pdf
    • http://watertea.space/7487390152568di9.pdf
    • https://cdn.sqhk.co/fakobijo/1gb5gfL/turbo_drift_3d_car_racing_game_mod_apk.pdf
    • http://olivamebel.com/koberupenotizijdd5.pdf
    • https://cdn-cms.f-static.net/uploads/4462065/normal_5fe905f338e14.pdf
    • https://cdn-cms.f-static.net/uploads/4415073/normal_6051a599e6ac8.pdf
    • http://manybigs.space/795147006886xind.pdf
    • https://cdn.sqhk.co/sebuwemid/m6MheFj/darkness_survival_cheats.pdf
    • http://damvglaz6.xyz/teachers_guide_science_8_digestive_system61sdm.pdf
    • https://static.s123-cdn-static.com/uploads/4408875/normal_5ff2768f43c08.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/961b25e7-1f2b-4d94-88d2-8704864c4cf7/telomojitomugirogipotigol.pdf
    • https://s3.amazonaws.com/jiwisi/real_cricket_19_android_release_date.pdf
    • https://s3.amazonaws.com/lekezaru/vote_for_me_poster_templates_free.pdf
    • https://uploads.strikinglycdn.com/files/0f7effa1-041c-4375-b2a3-100cb73bae8e/fosevimumis.pdf
    • https://uploads.strikinglycdn.com/files/0165aa74-8808-414b-abff-376f6f45f703/76634519512.pdf
    • https://s3.amazonaws.com/wofaxil/asuran_tamil_movie_movierulz.pdf
    • https://uploads.strikinglycdn.com/files/995ba983-c7b6-467c-aeba-90620cf78980/xowalawod.pdf
    • https://uploads.strikinglycdn.com/files/b1fba378-a250-4706-82d5-059859cc6d27/33600634893.pdf
    • https://s3.amazonaws.com/suzujewa/consumer_reports_top_load_washing_machines_2018.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_off0000eecf.bin
b9e1342757b47da7af76121caba339100b929abce8e8b1ac8dc37902c15d711b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEECF 5104 bytes
font_01_sfnt_off00010044.bin
225b6232f5a9c35f7f3cda625ab33bff892174fb9b5bf5f1b56d85b74ff81f42
pdf-font-stream PDF embedded font (sfnt) at offset 0x10044 10816 bytes