Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba18d1ff3873cb0d…

MALICIOUS

PDF

81.7 KB Created: 2021-06-11 04:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3b5a759657dd198e7596b186aa70c282 SHA-1: cb71791bb27091eff3661b5f975f21f971f070a5 SHA-256: ba18d1ff3873cb0d555a1bcaaa387b4713fea9a1d578a9de80300e1be0872ae9
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous URLs that masquerade as download links for movies, likely to deceive users into visiting malicious sites or downloading further malware. The document body contains obfuscated text and metadata related to its creation, but no direct script execution was observed.

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://infrive.ru/pbw?utm_term=hotarubi+no+mori+e+movie+download+eng+sub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484997/normal_603a81d1c3767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5fd9861fcd40f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494147/normal_5fe5f594c9882.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409420/normal_5fe0f7e1b90a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473379/normal_605574a5b4e46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460677/normal_605944301a0e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://funuvutidip.pbworks.com/f/37580132287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6387eda3-b6a8-46fb-8631-5aebdd13d641/pukowogodulitularisad.pdfIn PDF document text
    • http://vokoperoj.pbworks.com/f/the_mummy_tamil_dubbed_movie_download_2017.pdfIn PDF document text
    • http://risoxef.pbworks.com/f/bajirao_mastani_tamil_movie_online_free_watch.pdfIn PDF document text
    • http://mudowomuxexo.pbworks.com/w/file/fetch/144422592/am_pm_ka_full_form_kya_hoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2be640bf-0c23-45f9-bb14-29b1eb9353ed/how_to_install_rheem_retex_27_electric_tankless_water_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f86c0f94-b5c5-4c52-a0ba-44cf7fa3c4d4/75863526843.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1157418-dd27-43de-b0ee-18b93b5accae/sigma_bc_16.12_sts_manual.pdfIn PDF document text
    • http://nalujoxerisi.pbworks.com/w/file/fetch/144673656/49562566552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1919c490-19ea-4d1c-86e2-88fd3a5f4bd9/interview_with_the_vampire_claudia_age.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb38a42a-c8cf-4006-9911-0ce4eb1ed744/peavey_vypyr_ii_vip_1_review.pdfIn PDF document text
    • http://matekid.pbworks.com/w/file/fetch/144660207/58840449482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/566d5a2d-89e9-4c8c-bba2-db724314f411/kimidipixekexefa.pdfIn PDF document text
    • http://kipizasuzeda.pbworks.com/f/16301084331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10d330f-7771-481e-8ece-88bdd2d254c4/maytag_centennial_dryer_specifications.pdfIn PDF document text
    • http://zowonixepor.pbworks.com/f/hd_movies_2020_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a64921e8-2790-499e-b780-8dda7e122c29/how_to_turn_of_carbon_monoxide_alarm.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 3896 bytes
SHA-256: 1c2e87a7217863cbbc22f1c2ae06cb802212017f5a6bcef9abe120595d65165c
font_01_sfnt_off0000f8a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A9 5400 bytes
SHA-256: 144ce768994973422db66ff9ba71f87465cec8f2bf880c9a6a09151c37c56129
font_02_sfnt_off00010afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFE 16088 bytes
SHA-256: 5bdc8dd1cc6467d7c2495393f0d574d2bd27940ca6ac48f83ac749935a33b07d