Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bb226a2c9f8760…

MALICIOUS

PDF

77.7 KB Created: 2021-03-29 18:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0156ee34ad05f11a2aff988dd72d866d SHA-1: 98689681e23c46476895b09ea735c2210146c823 SHA-256: f2bb226a2c9f8760f98d09dab3451160e720a50cfc5120c4c034946411495a90
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it's part of a link farm designed to manipulate search engine results. The embedded URL points to a domain associated with phishing and malware distribution. ClamAV also detected it as Pdf.Phishing.Trojan, further supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=ingersoll+rand+air+compressor+parts+dealers+near+me
    • https://cdn.sqhk.co/jobiwokojo/ZjaePii/survival_crafting_games_xbox_one.pdf
    • https://cdn.sqhk.co/vibisidumes/txJBhii/yellow_apples_near_me.pdf
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/9ba0146d.pdf
    • http://manamuposa.getenjoyment.net/josibesobakinevinokulov.pdf
    • https://cdn.sqhk.co/lomasamube/rzgejcU/strategy_and_tactics_ussr_vs_usa_game.pdf
    • https://xaroduzorosu.weebly.com/uploads/1/3/1/3/131398324/kapezazab.pdf
    • http://dujojiwasemob.mywebcommunity.org/10700690571.pdf
    • https://cdn.sqhk.co/nusatabi/O3Sijhg/81303101388.pdf
    • https://cdn.sqhk.co/nejisakatok/r0ibIij/spooky_halloween_sounds_for_kids.pdf
    • http://lipexifinidoda.scienceontheweb.net/how_to_connect_bose_901_equalizer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/01d3741d-dfbc-46ec-88db-025f165f1f42/how_to.cite_apa.pdf
    • https://uploads.strikinglycdn.com/files/9327d568-9042-421e-b17d-bad471c43ed1/how_to_hang_weights_on_howard_miller_grandfather_clock.pdf
    • http://vuxepogi.atwebpages.com/clipsal_catalogue_2020.pdf
    • https://uploads.strikinglycdn.com/files/7c7b87ca-3432-43e7-b427-065a7b2a1ad8/85631328527.pdf
    • https://s3.amazonaws.com/taguxif/zafajavufinume.pdf
    • https://s3.amazonaws.com/pexodugosa/school_days_mod_apk_android_1.pdf
    • https://uploads.strikinglycdn.com/files/63b41a16-58b4-486c-8bc4-099aa584910f/data_science_interview_questions_book_reddit.pdf
    • https://s3.amazonaws.com/gimisorixosu/duzurasug.pdf
    • https://uploads.strikinglycdn.com/files/f3e6c965-9e45-4b98-86f0-ed993bad692f/dd_xanathar_guide_to_everything_download.pdf
    • https://uploads.strikinglycdn.com/files/c788e724-b8a2-4769-b4df-f62d6f2c66e9/how_to_install_adobe_premiere_elements_2020.pdf
    • https://uploads.strikinglycdn.com/files/bf02bf77-2f2a-4b24-a8c5-75eb88dc090c/living_things_depend_on_one_another.pdf
    • http://pusapovewazigu.onlinewebshop.net/nursery_school_syllabus.pdf
    • https://uploads.strikinglycdn.com/files/5c7a53cb-2f8a-4ea9-a07c-2cff8760e4e2/2239453666.pdf
    • https://s3.amazonaws.com/pomaxa/adobe_photoshop_7.0_learning_book_free_download_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/4a10fbef-a9e1-4cdd-b858-baecf2c9196c/sasulaganebozobe.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_off0000f0e0.bin
8c0f71a12c9de733180752380b8ffba24ede24b98927644b62d89b8702c2ff89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E0 5328 bytes
font_01_sfnt_off000102ed.bin
7a5da926bece85490201cea9a41618e95aa4fe63b2392785bcc85ae42178a750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102ED 11248 bytes

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