Malicious PDF — malware analysis report

Static analysis result for SHA-256 45503e430dbbaec7…

MALICIOUS

PDF

103.9 KB Created: 2021-03-18 09:38:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec5bf1a7ebc6c96f4644381f6749dbd7 SHA-1: 97904a43d3bfaf9ad52a95f482ddcbe507e33c83 SHA-256: 45503e430dbbaec70f0657efdda60574b9477a777f4d04792bbae25715b44a4d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a website disguised as a lease form, likely for phishing purposes. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=greater+boston+real+estate+board+forms+lease
    • http://opensoda.pro/rijaximipavelugobh6egv.pdf
    • http://mazoxobiziwikut.iblogger.org/25799963694.pdf
    • http://hairhome.moscow/the_dragon_reborn_audiobook_download5hhyb.pdf
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5fc841cb37330.pdf
    • https://berisojelo.weebly.com/uploads/1/3/0/8/130874511/tedotivi-nivemo-tabuzasap.pdf
    • https://cdn-cms.f-static.net/uploads/4469359/normal_6029ddef75714.pdf
    • https://cdn-cms.f-static.net/uploads/4457279/normal_602de2d378dad.pdf
    • http://wusodopepufex.66ghz.com/best_gba_games_emulator_for_android.pdf
    • https://static.s123-cdn-static.com/uploads/4447460/normal_600218d47d63f.pdf
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/a19965.pdf
    • http://mp4.design/lenovo_thinkpad_t480_spec_sheetupvpu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lisodibediv.epizy.com/97697230943.pdf
    • http://jafimogapevov.rf.gd/bhangra_dhol_tone.pdf
    • https://s3.amazonaws.com/pafiganovavi/sync_photos_from_android_to_pc_wireless.pdf
    • https://s3.amazonaws.com/radubozufiwo/mabodukirifin.pdf
    • http://tozemuj.rf.gd/marcha_claudicante_antilgica.pdf
    • http://dozipaju.rf.gd/xetupabu.pdf
    • https://s3.amazonaws.com/vajefam/custom_cheer_uniform_uk.pdf
    • http://numivonef.rf.gd/38048469417.pdf
    • https://s3.amazonaws.com/tikoweravisixu/research_proposal_format.pdf
    • http://kepinud.rf.gd/balancing_chemical_equations_worksheet_with_answers_hard.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015054.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x15054 2828 bytes
font_01_sfnt_off00015a4f.bin
65e76d849db74b29c94a14e4c5a3f602ced856d2c6e566a8b353bdf6b1caf5df
pdf-font-stream PDF embedded font (sfnt) at offset 0x15A4F 5224 bytes
font_02_sfnt_off00016bfc.bin
61f44dfe3a51c89579a55346aba8311769e7c7c43e8b2e55bb9ad7b1c3b7f5c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x16BFC 10528 bytes