Malicious PDF — malware analysis report

Static analysis result for SHA-256 0720f8da1547414e…

MALICIOUS

PDF

69.6 KB Created: 2021-03-28 21:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3163ca476dd48f5825b9335de1e27471 SHA-1: 2b9b2366df9bc974022b8f60a46ee5d1863833d5 SHA-256: 0720f8da1547414e715384ed969d8d0bb44f5dd543f7d80794f93637732c527a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with malicious activity, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Catia boolean operations tutorial pdf', indicating a phishing or social engineering attempt to trick the user into clicking the malicious link.

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://lozipotod.ru/award?keyword=catia+boolean+operations+tutorial+pdf
    • http://julivojurukumu.sportsontheweb.net/what_is_scientific_management_theory.pdf
    • http://riwalimuj.scienceontheweb.net/vernier_calliper_reading.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2e699d86-f402-4b8b-943c-0ca051ad15b4/what_type_of_suffix_is_ly.pdf
    • http://lupixopuvir.onlinewebshop.net/agile_software_development_book.pdf
    • https://uploads.strikinglycdn.com/files/f1ebf6eb-5f58-4f0a-93e0-7310d9c8a96f/happy_mothers_day_inspirational_quotes.pdf
    • https://s3.amazonaws.com/suzixegazunow/760474997.pdf
    • https://s3.amazonaws.com/ronatiduzoxij/costanzo_physiology_free.pdf
    • https://s3.amazonaws.com/zafijukopa/ps4_controller_keeps_blinking_and_wont_connect.pdf
    • http://xobeminal.atwebpages.com/remore.pdf
    • https://uploads.strikinglycdn.com/files/1b88ca96-03e1-45d6-9c8a-6bcf6b820f61/mcgraw_hill_connect_instructor_guide.pdf
    • https://s3.amazonaws.com/jumedemimo/22017839824.pdf
    • https://uploads.strikinglycdn.com/files/7195e636-81ac-48a8-948e-43063538b9d0/34708453687.pdf
    • http://dekifovep.epizy.com/63836736491.pdf
    • https://s3.amazonaws.com/xamapebonijos/5607718090.pdf
    • http://sanupivoxenano.epizy.com/bibolosi.pdf
    • https://uploads.strikinglycdn.com/files/44ad202f-0cae-4ee2-bb83-cbf873700f46/66761859047.pdf
    • https://s3.amazonaws.com/palevijuj/wuwewasebebalubuzovubikot.pdf
    • https://uploads.strikinglycdn.com/files/6426733f-fc81-49b3-b2f9-e2b55073b74b/forgotten_realms_gods_symbols.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_off0000d681.bin
cd4cdb63b7f5d714dbabe75c604b43f4f861709e2e9d55840a92cde29a5f5c0b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD681 5080 bytes
font_01_sfnt_off0000e7c5.bin
6149f08d950d3c37cfa1940bd17fa2df5a833fab299ac32d9687ddaed2ce7e1f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C5 9860 bytes