Malicious PDF — malware analysis report

Static analysis result for SHA-256 e185380cd5c788e6…

MALICIOUS

PDF

288.3 KB Created: 2021-03-06 01:59:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: abcc5110d9d3d412b921de506960f7ce SHA-1: a781902cda88be67d20f3db596c338fe1ae84711 SHA-256: e185380cd5c788e69495fe87d7fdde847d4814921689107e592a13da1b880a0c
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The sample is a PDF document that uses social engineering tactics, including a visual download button and a lure to install a browser extension or update. The embedded URL points to a suspicious domain, suggesting a download or redirection to a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9830

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=apk+gear+360 PDF link annotation
    • https://cdn.sqhk.co/fewibefanid/pNjgifh/daytona_international_speedway_weather_tomorrow.pdfIn PDF document text
    • http://pabukelib.66ghz.com/mepefej.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebosatu/Rox9Eha/gipulefoxove.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/PgiGYkY/cyclobenzaprine_half_life_breastfeeding.pdfIn PDF document text
    • http://nuwiratuzitezep.22web.org/city_car_driving_2017_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/uhbicgg/emergency_meeting_among_us_green_screen.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/uxhiPwd/23364796374.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/ysQNDif/networking_events_in_atlanta_today.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/hjfQojc/space_marshals_3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mevezexagugon.rf.gd/wiwofedojibujeme.pdfIn PDF document text
    • https://2e03c77f-99cc-4591-9807-54d8d49c9ce6.filesusr.com/ugd/759733_c27c969012d2474e93fd54ae07d1db2b.pdf?index=trueIn PDF document text
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_b6013233a3d64a6197a9fd600b9f4a52.pdf?index=trueIn PDF document text
    • http://xaboduvipil.epizy.com/aa_step_3_worksheets.pdfIn PDF document text
    • http://dizakopalelur.epizy.com/certificate_from_website_using_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/sozononew.pdfIn PDF document text
    • http://refuzopil.epizy.com/tatesufimuwikusepu.pdfIn PDF document text
    • https://e4da1597-3bb3-488b-9226-7c2c9e06e9ce.filesusr.com/ugd/db5d73_b0b6e99de9084d628a4dabda96d80dd0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/keppel_reit_annual_report_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/depomasuj.pdfIn PDF document text
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_5d0c439a0eb040e3b910510348ecf720.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukusa/dungeons__dragons_5th_edition_challenge_0-5_monster_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/chupke_se_aahista_full_video_song.pdfIn PDF document text
    • https://2386e270-bd20-42c1-b3e5-1ba7eaa1d68d.filesusr.com/ugd/b4f0c6_edc75a6452e94dd693bbc5207f7b8909.pdf?index=trueIn PDF document text
    • http://nufaviziziji.epizy.com/beneficial_ownership_register_template.pdfIn PDF document text
    • http://tozuduxaxikagik.rf.gd/latest_diary_of_a_wimpy_kid_book_2020.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000428be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x428BE 5292 bytes
SHA-256: 52f7ba93b39b957bea9063fdbff7a89e57a12e2e656415b6465b3d2717b97a2a
font_01_sfnt_off00043ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43AD3 17916 bytes
SHA-256: f513f94de2d3969d7aedc802e6f969f9269aefeeab86665421a57a7afe131320

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