Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd3b80ce88b9e4e…

MALICIOUS

PDF

79.1 KB Created: 2021-03-12 02:59:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d24dc9d16d68bd54aff8430f05d06fb4 SHA-1: 9aa707bfef9a82f273fbd2ca0cbb084502eb17eb SHA-256: edd3b80ce88b9e4e7bb3a2a2747975a71d1eeaaa2a06831a85dab00b2b3bb9fa
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, potentially used as a lure to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=my+beautiful+dark+twisted+fantasy+deluxe+zip PDF link annotation
    • https://cdn.sqhk.co/defisepeniba/geggajg/gps_tracker_by_phone_number_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/5geChgK/idle_makeover_mod_apk_0._5._21.pdfIn PDF document text
    • http://sodobinefudiguw.iblogger.org/peruwuwebunumub.pdfIn PDF document text
    • http://gepanukotex.getenjoyment.net/dalimiva.pdfIn PDF document text
    • http://lukisasore.mywebcommunity.org/95354653211.pdfIn PDF document text
    • https://cdn.sqhk.co/bamosabubesi/gft0mjh/epic_fantasy_dragon_art.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/fK6WZSS/logisizofaxesigi.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/bE6jjib/aimpoint_compm5b_reticle.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/24049859123.pdfIn PDF document text
    • http://fupefabesosada.mygamesonline.org/95231447237.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/26390441942.pdfIn PDF document text
    • http://gatofupimekow.mywebcommunity.org/xejivexeruwi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b70366df-a180-45c8-a21f-0fb14a7f7a0f/what_is_the_aa_4th_step.pdfIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_2aee74aa22284b3584a98083f5e43dec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e4d8ce0-d5cd-4688-ba0a-b485e8fdade3/rajapuzixobeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd75d612-c08f-4f13-a512-943e4eb34d6f/duverumudar.pdfIn PDF document text
    • http://zerozuru.epizy.com/kaba_locks_help.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bc54b53-96b7-46ae-a290-b109bd16bfa9/rajomujideverofimitejaguf.pdfIn PDF document text
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_3dcf4922e1dd4d4da36394de81ed10f6.pdf?index=trueIn PDF document text
    • http://dapekafuxururo.myartsonline.com/5812185976.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/tonadejatenowazuson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75fe1c22-8e1d-4f8c-b5ea-855cd30f336b/how_can_i_see_all_penny_stocks.pdfIn PDF document text
    • http://zifunugol.epizy.com/how_to_write_a_book_description_for_amazon.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_off0000eb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6A 5556 bytes
SHA-256: 19d10183f7fb34cec863de1c2733483be467ca044351468257d2516cc54481af
font_01_sfnt_off0000fe8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8D 15648 bytes
SHA-256: 7da0607f9140d773cbbe2377cff7b98e08dd4d00f14956983e6e6287715d8291