Malicious PDF — malware analysis report

Static analysis result for SHA-256 c082cdda2099faff…

MALICIOUS

PDF

82.5 KB Created: 2021-04-01 23:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: af2db394c4133f06c092a33cc5c898ff SHA-1: 67b96f1c6a30698122e76ee943907db952c4ebbf SHA-256: c082cdda2099faff8a980750dcca097dfeddc7bb27309c4137bcd63ec1ed0378
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with one pointing to 'botokaw.ru', suggesting it's part of a link farm designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/award?keyword=small+bowel+obstruction+radiology+pdf PDF link annotation
    • https://dipejabixeg.weebly.com/uploads/1/3/4/7/134716175/eae3511398c.pdfIn PDF document text
    • http://zagejudivavi.sportsontheweb.net/english_comic_story_free_download.pdfIn PDF document text
    • https://wuguruxozoza.weebly.com/uploads/1/3/4/0/134040539/jejejo.pdfIn PDF document text
    • http://lapiwudoxavov.scienceontheweb.net/standard_concrete_mix_ratio.pdfIn PDF document text
    • http://fidesuwuranotif.getenjoyment.net/becoming_supernatural_free.pdfIn PDF document text
    • https://xoravali.weebly.com/uploads/1/3/0/7/130775395/52f0a0a8fbb780c.pdfIn PDF document text
    • https://wavafawiwex.weebly.com/uploads/1/3/2/8/132815000/959480.pdfIn PDF document text
    • https://gemumumesuligiv.weebly.com/uploads/1/3/4/3/134318519/sasupepegawiwalozofi.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/acefeffd-dcce-4e57-86c2-c65510b201b8/duwalomulojed.pdfIn PDF document text
    • http://nedenapurolaket.rf.gd/zobalexutubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b610e32-8630-4af2-a2bc-b7b5a3e39da8/day_of_tears_by_julius_lester.pdfIn PDF document text
    • http://miwofalixi.rf.gd/facebook_lite_apple_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/66026634883.pdfIn PDF document text
    • http://rojanesifilagu.myartsonline.com/artificial_intelligence_a_modern_approach_2nd_edition_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edffc42e-fdd8-4fff-bd21-e3a9094eee98/how_do_i_cancel_my_planet_fitness_membership_letter.pdfIn PDF document text
    • http://lokokojorivumi.rf.gd/hatha_yoga_pradipika_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/netflix_premium_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3afb6d3e-0564-4666-922d-a9f3ebead77e/94970161965.pdfIn PDF document text
    • http://likutolejit.onlinewebshop.net/rumufifukowife.pdfIn PDF document text
    • http://lapamapifutul.epizy.com/69539014310.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/bts_fire_song_ilkpop.pdfIn PDF document text
    • http://gonesipida.epizy.com/sintomas_de_cancer_de_pancreas.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/how_much_to_repair_a_blown_head_gasket_honda_civic.pdfIn PDF document text
    • http://gedapewubu.epizy.com/fusuvele.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_off00010409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10409 5912 bytes
SHA-256: 71a4920768a4b37c35c8595875fc6c0927ab36f99ff4bd66770f9b6e1f447837
font_01_sfnt_off0001181e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181E 10692 bytes
SHA-256: c8ca745ca62f96e9bf463bc7d88ccb6cb9afd9162c24be3000ca6d5df1d7175b

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