Malicious PDF — malware analysis report

Static analysis result for SHA-256 9566669e156abb52…

MALICIOUS

PDF

78.7 KB Created: 2021-03-31 03:32:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cab61446f76fadd369f88260d974179b SHA-1: 05db64473580a25c8b945af82ae7c37277a4697d SHA-256: 9566669e156abb523a9dbef37df079ba0c0ee57aa2bb4173c4f97470f8bc1874
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the PDF structure are consistent with a spearphishing attachment used to drive traffic to a network of scam or malware sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dugedepap.ru/award?keyword=balancing+equations+rules+pdf PDF link annotation
    • https://cdn.sqhk.co/dibidoretu/wjgbheM/zigzag_oregon_weather.pdfIn PDF document text
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/889c893b.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/cZighcS/among_us_character_dead_body_png.pdfIn PDF document text
    • http://nulatapukedu.scienceontheweb.net/disokilobas.pdfIn PDF document text
    • http://pazefezos.mywebcommunity.org/8201304774.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/ethics_spinoza.pdfIn PDF document text
    • http://devigebogubiret.getenjoyment.net/99517184220.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/wesonewabifoto.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/iaMYTgj/jay_z_all_songs_free.pdfIn PDF document text
    • https://xifekuvazunavel.weebly.com/uploads/1/3/4/7/134748582/puwemuzuroneti.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/Z4jdkZO/classic_car_racing_games_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/bahehe0/gusolegibesujakupibor.pdfIn PDF document text
    • https://dotaterezisal.weebly.com/uploads/1/3/4/7/134771172/809af5de0.pdfIn PDF document text
    • https://jivekale.weebly.com/uploads/1/3/4/3/134319103/51679c558c3389.pdfIn PDF document text
    • https://cdn.sqhk.co/filajokajemu/tjcgdk9/ayyappa_ringtones_naa_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/htbhdwz/86904839247.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ghfagcG/poxedusonedewigepupapaz.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/iiMif38/football_coaching_sessions_for_5_year_olds.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_f2ec729f7f5742f3a2d5299cbb468b15.pdf?index=trueIn PDF document text
    • https://cc67bef4-e22e-42fd-bf01-3f02b15f800b.filesusr.com/ugd/080020_55d43bc8b2264fde8a91a3f7db988342.pdf?index=trueIn PDF document text
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_69271984e49540c6b980aa662f5072b9.pdf?index=trueIn PDF document text
    • http://givetupazowo.onlinewebshop.net/inorganic_chemistry_notes_in_tamil.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_133b07a3d80144dfb3069e19cb79f6fc.pdf?index=trueIn PDF document text
    • http://nununad.myartsonline.com/tapikolafinamejobaritosa.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_off0000e7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AB 5380 bytes
SHA-256: 3d20de507f066005ab9b9c62f1b21260862da42375b017e4d2c90b777a465794
font_01_sfnt_off0000f9f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F6 10892 bytes
SHA-256: 2875765660409ebd10ee7780420dbb463d36c158772ece7e1faf309a7b483872
font_02_sfnt_off00011f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F68 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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