Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d8605bd8eae44b4…

MALICIOUS

PDF

137.6 KB Created: 2021-03-14 14:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a5df838ad072c3192cb06de6527abedc SHA-1: 9040c406559e5459537a973d747a7cd58d9c9bbe SHA-256: 6d8605bd8eae44b4708cef28e91aee3dd5d24dbf104cee09d838737d69a58420
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=contoh+dokumen+amdal+rumah+sakit+pdf PDF link annotation
    • http://zesegalos.scienceontheweb.net/43836182945.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/haA6Pss/enjoy_learning_constellation_puzzles.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/76181118565.pdfIn PDF document text
    • https://cdn.sqhk.co/kopenanum/Kih4Tcs/97475166958.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/zoxili.pdfIn PDF document text
    • https://cdn.sqhk.co/dugixikisim/gkJhhbF/red_ball_adventure_3_math_playground.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/how_to_search_google_like_a_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/WheijJo/39137245615.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/4I2ibSr/marar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380876/normal_60242c23ca0e8.pdfIn PDF document text
    • http://zabovawupe.mypressonline.com/league_of_legends_patch_10.24b.pdfIn PDF document text
    • https://cdn.sqhk.co/danexili/ibgjgj1/dining_table_set_for_6_walmart.pdfIn PDF document text
    • http://vonexalux.sportsontheweb.net/microsoft_universal_mobile_keyboard_bluetooth_pairing.pdfIn PDF document text
    • http://fesalasan.mygamesonline.org/how_do_i_setup_my_hp_laserjet_cp1025nw_wireless_printer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403684/normal_604887407af83.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/c6ibift/ziboviniti.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/the_complete_turtletrader.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/macbeth_fate_vs_free_will_essay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maxuluxusit.atwebpages.com/73805137001.pdfIn PDF document text
    • http://sujawokasafu.onlinewebshop.net/arduino_programming_language_free_download.pdfIn PDF document text
    • http://gevapugono.atwebpages.com/62170062917.pdfIn PDF document text
    • http://niwimugosaz.onlinewebshop.net/16153472637.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_off0001e0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0E3 5248 bytes
SHA-256: 226f360814b4367ebbda05f8b617d39c0d914e4a3575100800d9d02783d03420
font_01_sfnt_off0001f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F286 11284 bytes
SHA-256: 47fef16e9eedfcdc95980981b924f2d8b9f4031a24b7907323aebb10556d2787

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