Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd52afcfd604fa5a…

MALICIOUS

PDF

70.5 KB Created: 2021-03-16 11:08:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 675d6eae5166d8794cc1ab300526de1e SHA-1: bc0917be3acf5f8af070b85e83ee7c75b34c77e1 SHA-256: dd52afcfd604fa5a9a73c80bb46f68e472344fd1fbb804840b40ccd1c79ccbc4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains numerous external links, suggesting it functions as a link farm designed to redirect users to potentially harmful websites. The document body, though heavily obfuscated, appears to contain metadata related to search terms and PDF generation tools, reinforcing the idea that it's a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=calculus+of+variations+fomin+pdf PDF link annotation
    • https://cdn.sqhk.co/laloropaki/giiENoH/donkey_kong_arcade_emulator_online.pdfIn PDF document text
    • http://fallofelin.online/guess_the_shadow_game_app_answers4wu6f.pdfIn PDF document text
    • https://cdn.sqhk.co/nomavunut/i8Wihig/25800490950.pdfIn PDF document text
    • https://cdn.sqhk.co/lumolixuwo/ejflhir/wood_block_puzzle_3d_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wosepimi/BhbRYia/rulikesojitanedofabedoko.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/fofolapinadazotobawujid.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/fPjfDvz/free_balls_apk_download_videoder.pdfIn PDF document text
    • http://discount50.pro/graphic_designer_job_description_examplesn95a0.pdfIn PDF document text
    • http://romeita.space/the_three_billy_goats_gruff_story_sequence_cards79ezq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mijugavagi.epizy.com/88381391614.pdfIn PDF document text
    • http://ravesezubepad.epizy.com/jumakuxixaluvu.pdfIn PDF document text
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_71b2b08e089d4550b6468dbbc325b1de.pdf?index=trueIn PDF document text
    • http://pisozew.rf.gd/alodinia_tratamiento.pdfIn PDF document text
    • http://finimuzodorum.rf.gd/super_mario_odyssey_guide_polygon.pdfIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_89d84dc0f59a466086e82ea6339d2e93.pdf?index=trueIn PDF document text
    • http://kezijewuzal.epizy.com/nufebokiwudepezixonogap.pdfIn PDF document text
    • http://zuxokoberibaw.atwebpages.com/69601775941.pdfIn PDF document text
    • http://xawazemekize.epizy.com/wujumotovabuv.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_off0000d6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F8 5264 bytes
SHA-256: fec7b0590d9595a7409a2b476472fd50830680e9ce7f257bd016795e6a19fd8e
font_01_sfnt_off0000e8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CE 10500 bytes
SHA-256: 9603665287485483bb25ee8b5cab421bded6e73c00c56e87bf3b113bc8d67a51

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