Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd9dc711a132e26…

MALICIOUS

PDF

78.7 KB Created: 2021-01-01 07:58:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2b972fa486284699992e3abea3fd53ba SHA-1: e40d064012ff9a1ff2e5f13ddb7c23c7a18c1c74 SHA-256: 9bd9dc711a132e263e65fee899bd4a97b588ef669c7f9ae22e4aad1ae3cdca08
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page or download further malware. The document body, though heavily obfuscated, appears to be a lure related to clothing, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/strik?utm_term=tie+dye+sweatsuit+nike PDF link annotation
    • https://cdn.sqhk.co/kewudomavave/hd8je4i/2687648107.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/J9hex4p/microgolfoven_combi_krefel.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/ciijbyc/generals_battle_of_bunker_hill.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kakef/nikufovus.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/4365897055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a078fbaf-816d-4629-8c58-039c3e7d10d3/kegesobalim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ac5989-7d17-4bef-95d4-4d54001d3ef9/walkera_runner_250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c440fe4-c409-4880-a0f7-dd4346c7b422/how_to_unshare_a_video_on_google_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed12416-ea6c-424e-9dfb-dd7399ba9b55/unseen_last_seen_hide_online_blue_ticks_no.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55a8b16-80a3-4a38-a3de-e60a43e06cfb/nojox.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/ironing_sheets_laundry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11153e3e-e6c6-443d-b6e2-d3378907c38a/management_abbreviation_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/uk_inflation_report_august_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/vupemiputujevinajamojen.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB4 4900 bytes
SHA-256: dee33a043cb4de2c68170a2367af1af27bdbd81814a1de3d5b0bd94ed4cc5d30
font_01_sfnt_off0000f08f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08F 12060 bytes
SHA-256: ee93b69e2fef43973fbbdf4d1bb9254020422f279e5d13d9db0c725941d34f05
font_02_sfnt_off0001191e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191E 16060 bytes
SHA-256: 5bd88bd5c44eb894b151ed33ba27cda91e6b534aa93a3b288c9f525c64baf622

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