Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3fc2049407de690…

MALICIOUS

PDF

122.2 KB Created: 2021-04-04 10:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 479812d936bfec291b48f2efcd844344 SHA-1: ad0063861da41f8286e8e82feb3f5dfff92959f7 SHA-256: d3fc2049407de690e04be03571a26b4f2108879f707a254246073ca1c392fe64
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, particularly the one in the document body, suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a common phishing vector.

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://golowaki.ru/award?keyword=nostra+aetate+pdf+hrvatski
    • http://xovijezup.mywebcommunity.org/verodobefe.pdf
    • http://topchambre.xyz/polder_instant_read_digital_probe_kitchen_thermometeree6s4.pdf
    • https://cdn.sqhk.co/pobijejok/dgcj1ie/lukopumiwiwonamok.pdf
    • https://cdn.sqhk.co/livaxipovage/hmWxjht/codigo_para_enviar_recargas_claro_guatemala.pdf
    • http://help-lnstagram-verifycopyrgiht.com/what_book_is_the_film_the_irishman_based_onlwdd2.pdf
    • https://cdn.sqhk.co/niririga/ahcIdhb/40798566697.pdf
    • http://good-production20.site/tozilbar6w.pdf
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/werep.pdf
    • http://normab-id.com/how_do_i_reset_my_brother_printer_tonerykuor.pdf
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/bujibodi.pdf
    • http://loveantravel.xyz/3142092989739598.pdf
    • http://bbflowers.net/19061162753hsz3o.pdf
    • http://winoorama.fun/land_bridge_theoryi991w.pdf
    • http://zanartcc.net/colleges_to_become_a_teacher_in_new_york7gotq.pdf
    • http://salet.store/5087710459vv2c1.pdf
    • http://getfreecreditreport.info/lg_v20_price_philippinespo9ig.pdf
    • https://semototip.weebly.com/uploads/1/3/5/3/135386148/854435.pdf
    • http://gilumesu.mypressonline.com/istanbul_airport_map.pdf
    • http://palupalukagu.mygamesonline.org/72141949022.pdf
    • https://cdn.sqhk.co/kososojog/KihcjeX/airwatch_secure_email_gateway_configuration_guide.pdf
    • http://jufanurozud.getenjoyment.net/66089310151.pdf
    • https://kokilanoru.weebly.com/uploads/1/3/4/0/134012510/wisepipesesiwezojut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jazopizebe.atwebpages.com/zojokeparuvi.pdf
    • http://jezevenakos.myartsonline.com/auditoria_administrativa_ii.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019edd.bin
6c601baa2211639f148f1c45d55f0f054938d59a078bd15e9260e9b3cd02b218
pdf-font-stream PDF embedded font (sfnt) at offset 0x19EDD 5188 bytes
font_01_sfnt_off0001b08b.bin
8eba51fb94867d46f7c1fbb67906341d0f91a6cd9c42d46688e90cbad9b965d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B08B 13352 bytes