Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc91d30ed7e56c6…

MALICIOUS

PDF

79.0 KB Created: 2021-03-13 21:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 372d7f6019de9365db31fb1620fd5e56 SHA-1: e1bed5b906eebd736bd68a671f3bd7123949cc76 SHA-256: 3fc91d30ed7e56c6f47a477be94e9e9b88045ee1216c6060ed99966ee4633868
126 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs pointing to suspicious domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The document body, though heavily obfuscated, contains keywords related to hacking, further supporting the malicious nature. The presence of external URIs and link farm heuristics indicates the document is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/wix?keyword=how+to+hack+gangstar+vegas PDF link annotation
    • https://cdn.sqhk.co/wegifopi/3gdieii/vakogolifip.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/46Mgjjg/wudawubufawojus.pdfIn PDF document text
    • http://wewedaz.iblogger.org/81619821338.pdfIn PDF document text
    • https://cdn.sqhk.co/lavopizusasu/fhbIbib/wuweluja.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/chiiejb/96207486663.pdfIn PDF document text
    • https://cdn.sqhk.co/megilujij/hdgcpii/koxawuralirosuwofadaz.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/iiXf2FB/free_wifi_texting_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/CRAgeic/xetiroviruko.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/cheekh_episode_19_full.pdfIn PDF document text
    • http://suxusojifuf.iblogger.org/7755450853.pdfIn PDF document text
    • https://cdn.sqhk.co/zurajekiviw/ialYvcN/extreme_car_driving_simulator_apk_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/WpjjIij/top_ten_topics_of_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/gawekogidinulasusaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d1c54f7-b493-4d8b-b3d4-5c0df414027d/what_meats_can_you_eat_on_an_alkaline_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/bigasoft_total_video_converter_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/servicenow_email_notification_formatting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560adc62-e52b-477b-98e8-3ea7a81ada5e/mavasiwawezilaset.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/2014_porsche_cayenne_manual_transmission_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/the_green_mile_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/wakutosakosuvunimiwe.pdfIn PDF document text
    • http://mikafametulere.epizy.com/assamese_language_video_songs_free.pdfIn PDF document text
    • http://tirinito.epizy.com/132413979.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/49978876817.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/sample_email_template_for_sending_resume.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_off0000ea15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 5204 bytes
SHA-256: 89b2f8a6356b00f2a1323f73151e7104add0232d3704e9c46eb59778e7a2b4a6
font_01_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 22100 bytes
SHA-256: 600b958d2510a0907029db0572becd048de21707d813d0f7d9f49e9ba4841210

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