Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b193610beac194…

MALICIOUS

PDF

72.2 KB Created: 2021-03-13 22:35:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc71ac5a8164c6f6a5577b8e5c23579c SHA-1: 7db1aac76428226fbebcf8afa14b6eeea1c75d22 SHA-256: 16b193610beac19425c7dadc0b34a140efdd6ddfb6cf3e74cc2ea67b76b46fdb
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as a phishing trojan. The document contains an embedded URL that directs users to a suspicious domain, likely to host a phishing page or download further malware. The presence of embedded URLs and the nature of the ClamAV detection strongly suggest a phishing or malware distribution 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://kuzutuzo.ru/strik?utm_term=singer+fashion+mate+7256+error+codes
    • https://cdn.sqhk.co/migixurej/yUigTBX/kodiak_bear_bites_nutrition.pdf
    • http://bumumapa.mypressonline.com/apache_nifi_for_dummies_download.pdf
    • https://cdn.sqhk.co/nolagutotato/1jhDieB/pixel_starships_ship_layout.pdf
    • https://wijuluberaselak.weebly.com/uploads/1/3/4/0/134016921/goxunakikimilulurex.pdf
    • http://lozejebivo.scienceontheweb.net/62615756612.pdf
    • http://kumajamefe.getenjoyment.net/rojim.pdf
    • http://wimuzawoxi.getenjoyment.net/saraporojalezin.pdf
    • https://suzuxagutif.weebly.com/uploads/1/3/4/3/134352905/7942147.pdf
    • https://lesikikonojen.weebly.com/uploads/1/3/0/7/130740189/dotasitono.pdf
    • https://jiromozuno.weebly.com/uploads/1/3/5/3/135387519/digelese.pdf
    • http://nebatomefov.scienceontheweb.net/lativinaviruki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vawanumezal.onlinewebshop.net/56862726444.pdf
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_da503b74a0054867bfd2fc733fcfd681.pdf?index=true
    • http://rawigukegopafot.onlinewebshop.net/kuxafurorameg.pdf
    • https://f61a8d15-835b-4c36-a3db-e4ead73ab13f.filesusr.com/ugd/e9f5f3_4b443da3f57749afadda4f61ea4ff0eb.pdf?index=true
    • https://s3.amazonaws.com/xaliwalufoguni/83505197220.pdf
    • https://s3.amazonaws.com/jevelel/south_movie_2018_song_video.pdf
    • https://s3.amazonaws.com/dukajevo/lotefidizugatovogob.pdf
    • https://s3.amazonaws.com/metakibeme/how_often_to_clean_ruger_lc9s.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_off0000d89e.bin
c25868f80f64e8e913cb88103b3a3f79d03fa623f5ce4ec1806b7c518d13d0f2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD89E 5996 bytes
font_01_sfnt_off0000eced.bin
c375ddb8507479f042df4b15a383f5777d0cfe96281ac0b35722663e29849d27
pdf-font-stream PDF embedded font (sfnt) at offset 0xECED 10904 bytes