Malicious PDF — malware analysis report

Static analysis result for SHA-256 d641569869f6e257…

MALICIOUS

PDF

72.5 KB Created: 2021-03-25 13:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 941fa5d8c619412f434e71ceaac78b75 SHA-1: 589dd99020aca56c01b429c8d04d42327be35546 SHA-256: d641569869f6e257f1632b6f3a1f09dcfd389a712e3048f0dfd699e9883f61fa
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-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://mezovuduw.ru/strik?utm_term=sam%2527s+club+trojan+golf+cart+batteries PDF link annotation
    • https://sewetupowak.weebly.com/uploads/1/3/5/9/135971958/4860177.pdfIn PDF document text
    • http://lerawutevokaj.iblogger.org/best_boot_manager_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/imjjjiQ/wings_of_fire_movie_2021.pdfIn PDF document text
    • http://xejiwov.iblogger.org/6597871501.pdfIn PDF document text
    • https://cdn.sqhk.co/segenoliz/QhgRigR/visemojegesidev.pdfIn PDF document text
    • https://famofupogatom.weebly.com/uploads/1/3/0/7/130739443/jeviburuwebixop_xomomujotozigi_fowedamuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/bexefoboxevi/jgjbG5H/reaper_pepper_powder.pdfIn PDF document text
    • https://sibikobibe.weebly.com/uploads/1/3/4/0/134040949/lagebire.pdfIn PDF document text
    • https://rofupujo.weebly.com/uploads/1/3/4/3/134335987/goziv_pafezak_nefon.pdfIn PDF document text
    • http://napowojeba.medianewsonline.com/76485431876.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/36042902-3985-4bc1-9aa3-e8fce3521de6/59134306287.pdfIn PDF document text
    • http://duvexarido.epizy.com/melenimet.pdfIn PDF document text
    • http://kimoviranonaf.onlinewebshop.net/history_of_the_bible_canon.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/10563989715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5674613-429b-49e2-bb43-9aced9838d06/fancy_slime_mod_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43dd6f42-68df-4558-bf91-8ce168e0b0c2/81609156906.pdfIn PDF document text
    • http://motuvogipe.onlinewebshop.net/42583529349.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/roland_tr8_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/rumus_aritmatika_dan_geometri.pdfIn PDF document text
    • http://safedoguno.onlinewebshop.net/3721656086.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/sons_of_anarchy_wallpaper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/331f2208-4d3b-4628-b99e-cde606869b1c/is_there_a_season_2_for_no_game_no_life.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_off0000de51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE51 5552 bytes
SHA-256: f2f75dbdf3b4609acc16f1e8e2e0712ade7b0f054f73319cff227b20a2efe0c0
font_01_sfnt_off0000f12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12B 10404 bytes
SHA-256: 8f174355fb1232776d949bb48c78ad8776d128e1decabc43d37dbbdbb3bba1f0

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