Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5aad9cd3ff33b96…

MALICIOUS

PDF

94.4 KB Created: 2021-04-06 16:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8995127e14cb2542ab9761391dadaab6 SHA-1: 7932c9092aa978ac856b88f1a2b3bdbcf74f0cbc SHA-256: f5aad9cd3ff33b96acd73b2892926730ce4927a8fe7da06077e87aeaf264150c
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a primary focus on directing users to 'midufefew.ru'. This URL is presented as a search result for a game, indicating a phishing or redirection attempt. The heuristic firings, including 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS', strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/wix?keyword=the+impossible+game+unblocked+games+66
    • https://notuvovezed.weebly.com/uploads/1/3/1/3/131382721/gireboza.pdf
    • https://cdn.sqhk.co/lubometusoz/jEpJOyD/fuxafuvaluxisefofamerasuk.pdf
    • https://cdn.sqhk.co/rureroso/jejcohb/history_of_southeast_asia_podcast.pdf
    • https://cdn.sqhk.co/zirimikuj/Rwp2aje/easy_wallet_apple_watch_sync.pdf
    • https://forerijekakifur.weebly.com/uploads/1/3/5/4/135401119/zedurusaguwurigajov.pdf
    • https://cdn.sqhk.co/sejiragidu/jb0mf6h/64695381103.pdf
    • http://zavolofa.mygamesonline.org/article_35a.pdf
    • http://vikiduxa.mywebcommunity.org/kabbalistic_numerology_and_the_mysteries_of_the_torah.pdf
    • http://matizaw.mywebcommunity.org/96441945508.pdf
    • http://tuxosuzarug.iblogger.org/88477716898.pdf
    • http://fosavaxenu.mypressonline.com/what_is_gender_and_development_program.pdf
    • https://jiparebifipi.weebly.com/uploads/1/3/4/6/134638028/5198342.pdf
    • http://sipipewawezizuf.getenjoyment.net/wizards_and_warriors_pc_cheats.pdf
    • http://gagimubu.mywebcommunity.org/who_knows_better_than_me_meaning_in_urdu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nekopujopulo.rf.gd/zone_8_planting_guide_flowers.pdf
    • http://xujided.onlinewebshop.net/desavajuvaxa.pdf
    • https://uploads.strikinglycdn.com/files/3c0867c0-f50d-4e61-a475-f081aea901f1/39349809447.pdf
    • http://gajutar.onlinewebshop.net/hec_hms_online_training.pdf
    • https://uploads.strikinglycdn.com/files/b2b2b923-1ff7-4348-882f-08e92ce50cb2/70152887856.pdf
    • http://dopodisimedu.epizy.com/23270446964.pdf
    • http://pabewuvuxaf.onlinewebshop.net/kamowewariradobaxevogawi.pdf
    • https://uploads.strikinglycdn.com/files/a09174c0-60f6-4b02-97e3-bf15abbc5c4e/what_questions_should_i_ask_when_buying_solar_panels.pdf
    • https://uploads.strikinglycdn.com/files/f510716f-951f-4c83-be14-bc6b2662c49e/nisozo.pdf
    • https://uploads.strikinglycdn.com/files/df942ee1-3267-495a-8334-7c2eac2f8f1d/nitro_to_excel_converter_free_download_full_version_with_crack.pdf
    • http://fivuneg.rf.gd/94921236276.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_off0001326f.bin
e93e581f5cda8d1b6eddec7d432179d3cb55e75cb5af04d78b05ed4084e0548c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1326F 5700 bytes
font_01_sfnt_off000145a0.bin
e13f87acdbdc3e744f8685245bdaa5fe5266652eb2f4f6fae1f0e95364a592f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145A0 11084 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.