Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd9e0f51865c2a8…

MALICIOUS

PDF

96.3 KB Created: 2021-03-27 21:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dc3e78cb9f3dcb7251cfc6ac21fa9b8 SHA-1: bd118c16a0775d600de59738845cbca90f9cc8bc SHA-256: abd9e0f51865c2a813dc05d515b9651dedc22036653a71aa7fc042e833e3f63f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to the PDF creation and potentially a lure.

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://zajinet.ru/aws?utm_term=cannery+row+restaurants+open
    • https://static.s123-cdn-static.com/uploads/4386094/normal_600342e245ff8.pdf
    • https://cdn.sqhk.co/nodewanase/hhbCQdF/bunny_popsicle_sticks.pdf
    • https://cdn.sqhk.co/ziloteduxemo/IghdkgG/wuretolisegab.pdf
    • http://test123test.xyz/60525116969k21c8.pdf
    • http://mishabelle.ru/geometric_probability_problems_and_solutionsmw1y4.pdf
    • https://fumirufax.weebly.com/uploads/1/3/1/8/131856188/2a24d0f.pdf
    • http://digitalcalakk1.xyz/bad_girl_video_songyj5kf.pdf
    • http://prizinsta24.online/418317933953yzkk.pdf
    • https://dosisusibifoba.weebly.com/uploads/1/3/4/2/134236234/a968c23d5cbf.pdf
    • https://cdn-cms.f-static.net/uploads/4485310/normal_60206ebf01d8b.pdf
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5fe41bb0350f5.pdf
    • http://introdom.ru/garmin_g600_autopilotywyfy.pdf
    • https://cdn.sqhk.co/tunixomaj/idBsf7z/51131753867.pdf
    • https://static.s123-cdn-static.com/uploads/4403563/normal_5fdd95010ad0b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6a00c919-2d45-477c-84af-f2999161ce4e/57141319964.pdf
    • https://uploads.strikinglycdn.com/files/f3d1eeae-46e7-4d1d-a45d-c296e0d83d81/jayco_owners_club_act.pdf
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_eef2cab4ec684c28bfcd3cf4352d1a6a.pdf?index=true
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_f4bdaad5b81f4080a2c2eaa605304244.pdf?index=true
    • 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_off00013d40.bin
de7cb270e9e41cea089b2569cb576bdf251c8c944141362773f2223cf699c36a
pdf-font-stream PDF embedded font (sfnt) at offset 0x13D40 4880 bytes
font_01_sfnt_off00014dfd.bin
fd15b2e09af11fc70ab4e3f74239e7df2d2d5635da5af7c0f5caba20a2c423b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x14DFD 11500 bytes