Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e9658ca86163a0…

MALICIOUS

PDF

80.5 KB Created: 2021-03-23 06:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41ce95960fa851310c4b841fca2cb24d SHA-1: 7f0976a3e6b411672838624b182c65499d0cef16 SHA-256: 94e9658ca86163a0092b3e19dfd66aab442b5954d90819ba2bbda4c8275c4e74
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a suspicious URL, likely intended to trick the user into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=dk+eyewitness+travel+guide+naples+the+amalfi+coast+pdf
    • https://pusasosabuni.weebly.com/uploads/1/3/4/6/134654602/5736687.pdf
    • http://guketaz.iblogger.org/properties_of_adhesives.pdf
    • https://pawagidi.weebly.com/uploads/1/3/1/1/131164052/9479461.pdf
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/4160564.pdf
    • https://pasadotofeb.weebly.com/uploads/1/3/1/4/131482919/giwigozunekalogamofu.pdf
    • http://praktika-ingenieur.com/kakefatikevobuworii13sy.pdf
    • http://dezirutumevolu.iblogger.org/repujojix.pdf
    • https://wijinopupog.weebly.com/uploads/1/3/5/3/135323990/d08af2.pdf
    • http://vquest.website/debedavozikigakivusibezr1lh.pdf
    • http://axecheat7.xyz/driver_installation_failureca6be.pdf
    • http://thrivewebs.com/xadevatovizemigoxavu0p70m.pdf
    • http://mmamba.ru/wowudalabivelisetla8x4.pdf
    • https://jekosupoma.weebly.com/uploads/1/3/1/6/131637113/5908030.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rozepof.rf.gd/phonemes_and_allophones.pdf
    • https://uploads.strikinglycdn.com/files/67f651f4-e468-4b35-8349-7387ff3c8ade/amped_wireless_r10000_setup.pdf
    • https://uploads.strikinglycdn.com/files/71504f76-463d-47af-8282-f18934dd14b8/dua_istikhara_transliteration.pdf
    • https://eaa62ee9-779c-4a2d-9f50-6c66b019a99c.filesusr.com/ugd/1cc777_d8e33effba3f4e6a83bc42ffda979806.pdf?index=true
    • http://wabawepa.rf.gd/crazy_train_lyrics.pdf
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_acbd0d00651849d9a4c9faf028b9934e.pdf?index=true
    • http://tomosuromiv.epizy.com/36106997053.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_off0000ebb8.bin
ebdf83e5665aa6f9f53aa7689c3d8ca1e1afad8555590d8f684df0ce60d1548b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 5768 bytes
font_01_sfnt_off0000ff54.bin
04a18ccc0589a9da614848adea690f89c07ef4dcaca200aedfce89f5d281ae58
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF54 10876 bytes
font_02_sfnt_off00012410.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x12410 4324 bytes