Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f930940d586031…

MALICIOUS

PDF

79.9 KB Created: 2021-04-06 06:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5143eaf01b46777088f0f0499b271039 SHA-1: 76aae272a3a7e6a22d52ba80c6c636272a1b2d37 SHA-256: 39f930940d58603140b0c6b752783ce3eb396fd38ad7dca55bc3bf20229e6426
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to legal dictionaries, aligning with a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/award?keyword=legal+dictionary+english+to+gujarati+pdf
    • http://zesamoa.online/how_much_sat_score_is_required_for_uc_berkeleybhc0n.pdf
    • http://extrameets.fun/2952261402n2uml.pdf
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5fee5375bed7d.pdf
    • https://mipurokuniveg.weebly.com/uploads/1/3/4/5/134508865/9044774.pdf
    • https://jowapiwinutakun.weebly.com/uploads/1/3/4/3/134365581/xunazerowekemep-xezagewo-muxerisiduxa.pdf
    • https://cdn-cms.f-static.net/uploads/4416921/normal_6028efe577bfc.pdf
    • https://cdn-cms.f-static.net/uploads/4473651/normal_5fe8b9d11cb2a.pdf
    • https://cdn-cms.f-static.net/uploads/4445729/normal_601e3c5365b5c.pdf
    • https://cdn-cms.f-static.net/uploads/4485165/normal_602b0fcc6e1a0.pdf
    • https://static.s123-cdn-static.com/uploads/4385848/normal_5ff221ad52b9c.pdf
    • http://fragcups.com/garmin_handheld_gps_gpsmap_78_reviewm5vmq.pdf
    • http://resimpub.com/iso_9001_revision_2015_free_downloadkkecb.pdf
    • https://fojowixejomad.weebly.com/uploads/1/3/2/6/132681658/ae5a17f6.pdf
    • https://nemamalalebu.weebly.com/uploads/1/3/4/3/134357173/9f21d321b9.pdf
    • https://static.s123-cdn-static.com/uploads/4423195/normal_60061559742e4.pdf
    • https://static.s123-cdn-static.com/uploads/4487918/normal_5fed404a86eb8.pdf
    • https://xitetufiwirisax.weebly.com/uploads/1/3/4/0/134041449/pawedajiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.indictrans.org
    • https://uploads.strikinglycdn.com/files/cdf3f5fc-9249-4ae5-85b8-9f282f04697a/ejercicios_resueltos_matematicas_3_eso_operaciones_combinadas_fracciones.pdf
    • https://uploads.strikinglycdn.com/files/591dadde-8127-45ec-a62c-b4cea185891b/44743996823.pdf
    • https://uploads.strikinglycdn.com/files/cbaa0f0f-9a9a-45c3-8939-ab5f329e4b9b/44989051333.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_off0000e46b.bin
fd6df06cc0b4411f7ac4c2e0561b417913344ee72a178e3eea304286b8eeca0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE46B 5536 bytes
font_01_sfnt_off0000f74b.bin
7ed5579e9b86033b00e28ec5b09f9eaf1c1c2cd724c05a46de991361ac37f2ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF74B 6656 bytes
font_02_sfnt_off00010cf1.bin
58f5e332877e09616aa887b551fc037f3cbb426f40ea92fd8848137d3a238c2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF1 10704 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.