Malicious PDF — malware analysis report

Static analysis result for SHA-256 8386ac6671623297…

MALICIOUS

PDF

72.7 KB Created: 2021-04-02 14:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7759806b8539c62783248d8b59b39b17 SHA-1: daa8b34b2e0a4ef5455292bd9a3d0860c49c004f SHA-256: 8386ac6671623297641b69bd49eab5b03203551bc0486b6e3c7b5136abab82d8
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. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into navigating to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=la+fitness+coral+springs+university
    • http://visojafuzotubez.22web.org/salufimipewivudefavako.pdf
    • http://instahelpforbusiness.com/behringer_mixer_502_pricewg739.pdf
    • http://salleapp.xyz/18146468269pbkea.pdf
    • http://springwin.space/fifty_shades_darker_book_pageshk9k5.pdf
    • http://kulirefibew.22web.org/diteja.pdf
    • http://formverifiedbadge.com/bsc_forensic_science_syllabus_downloadukgh5.pdf
    • http://contarinihome.com/geometry_special_right_triangles_worksheet_answerspfn5o.pdf
    • http://autoport76.online/bin_sachivalay_paper_2012ih136.pdf
    • http://s-tochka.ru/sawawu0nrz5.pdf
    • http://theharaka.online/european_car_service_east_tamakiu74k1.pdf
    • http://lavorunolutoga.22web.org/snake_pass_pc_game_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vasugam.rf.gd/isotropic_elasticity.pdf
    • https://uploads.strikinglycdn.com/files/56dc67a9-c157-4315-87bc-c68e5a13fb02/what_foods_does_not_have_gluten.pdf
    • https://uploads.strikinglycdn.com/files/d1a54d11-14ef-421c-afb5-0c8ea8eb1484/bebojenozawosadumeda.pdf
    • https://uploads.strikinglycdn.com/files/1f622f14-1aae-47c5-83d1-c8d79bffed9d/rideforom.pdf
    • http://baverasoge.epizy.com/mawojidumixu.pdf
    • https://uploads.strikinglycdn.com/files/cbdbd71f-5316-42d1-9d82-bb8644c3cc41/62599649983.pdf
    • https://uploads.strikinglycdn.com/files/80397963-be45-46e0-b2fa-b376d9fff993/hp_envy_5530_printer_is_in_an_error_state.pdf
    • https://uploads.strikinglycdn.com/files/23d16d7b-e840-4126-99af-4275314e6483/nuruw.pdf
    • https://uploads.strikinglycdn.com/files/ea7890ce-9cab-433c-b4ca-23c5ab9ce050/ncaa_d2_football_conferences.pdf
    • https://uploads.strikinglycdn.com/files/f2b319f6-c681-4f4b-a1c2-e158e75d94c9/fifty_shades_of_grey_soundtrack_mp3_download.pdf
    • https://uploads.strikinglycdn.com/files/575b21d9-0aa7-489f-b893-2315ff3919f9/47744043821.pdf
    • https://uploads.strikinglycdn.com/files/badcd5de-9aa3-455e-843d-8ec16ab77ea6/why_is_my_fire_alarm_beeping_every_few_minutes.pdf
    • http://nevozabewovezo.epizy.com/xexekisovu.pdf
    • http://nisuzadusidu.epizy.com/janatha_garage_songs_in_telugu_free.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_off0000db14.bin
1dc12af347140ebf26cc34815312c55302ce2f7d5ed236c9826aef7b58d9f0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 5288 bytes
font_01_sfnt_off0000ed3d.bin
c8cf9c50a01ec4cab8cf75f0714a0c8d570d8bdf465a10fbdbb6a46f419ccb2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED3D 11660 bytes

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