Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbc179456d6ac98…

MALICIOUS

PDF

101.0 KB Created: 2021-03-15 16:24:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 43297de49d4e65adf64e952a44890de2 SHA-1: a6d06bf04b4aaa8a6066946fc2f5ea2ff1d1b873 SHA-256: fdbc179456d6ac98d187c4a96cd955b962a2c929bd4c3f0ad68f1519f4df6e39
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or a second-stage payload. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/wix?keyword=gear+enhancing+guide+bdo PDF link annotation
    • http://wojifos.22web.org/carry_on_jatta_2_300mb.pdfIn PDF document text
    • http://ponopawux.iblogger.org/bolo_azadi_gully_boy_song_pagalworld.pdfIn PDF document text
    • http://sovaxalute.22web.org/41772878218.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juwizomeru.rf.gd/xezorerinovasedeg.pdfIn PDF document text
    • http://dasiwof.epizy.com/adjective_describe_personality.pdfIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_6995b8b0324d44e489c090475115bcdb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/admiral_movie_2015_free.pdfIn PDF document text
    • http://molutuganum.epizy.com/11085484464.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/even_though_although_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/does_google_maps_timeline_work_on_iphone.pdfIn PDF document text
    • http://wateduwixe.epizy.com/23869929325.pdfIn PDF document text
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_af1c75e44bb6457ebd4e9dc7d1728d4f.pdf?index=trueIn PDF document text
    • https://8981c48c-e8f9-4420-a3cf-b1d16d3d5ba3.filesusr.com/ugd/a298ce_fbb1c91683b74051abd9cbf42e24255d.pdf?index=trueIn PDF document text
    • http://zidazimimaf.epizy.com/99777221102.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/69786335926.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_df78fdb4bca749a3ba51ad4ffefa07aa.pdf?index=trueIn PDF document text
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_1dd0216959024cbb80a230ba1c3a57ea.pdf?index=trueIn PDF document text
    • http://wupafar.rf.gd/92868375215.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12959 5160 bytes
SHA-256: f7b942932a6d8cc1c2d80cf7316d34ae12489c3b84d6ad8fc313d59e5924e4e5
font_01_sfnt_off00013ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AD7 2604 bytes
SHA-256: 6020a05d745f9ab5ef145392f6949d83899bb3d6650a375b87a7e7a91c0ff1a4
font_02_sfnt_off0001452e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1452E 11520 bytes
SHA-256: b5318f489ff202c49d1bb285a734994a1267c2d7d354da3babed11188655a7c4
font_03_sfnt_off00016cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CD8 17400 bytes
SHA-256: 1750a82619c50c89c403e819d63d5df40f56348d7875cfcdcbcf84805164895d

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