Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c16eb86a328723…

MALICIOUS

PDF

76.0 KB Created: 2021-03-10 08:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b807df9bb5d61fb09d76872c019ba308 SHA-1: 122f649cc152c70ee562fd4304c14781b52c2bac SHA-256: c9c16eb86a328723fd7bd512f3b734974659eb933c13580eff2f768a09fb630f
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains numerous embedded URLs pointing to disposable or suspicious domains, suggesting a phishing or link-farming scheme. The presence of external URIs and the nature of the heuristics indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=terrarium+apk+firestick PDF link annotation
    • http://pusapev.scienceontheweb.net/reviso_bibliogrfica_tcc.pdfIn PDF document text
    • http://golixudib.mypressonline.com/how_much_do_you_pay_interior_designers.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/ohghiij/52208130626.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/2001_toyota_camry_workshop_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/QsJjiwq/game_launcher_app_for_android.pdfIn PDF document text
    • http://lesuxofozadize.mygamesonline.org/pokemon_fire_red_cheats_gameshark.pdfIn PDF document text
    • https://cdn.sqhk.co/vevajewez/lgejege/kipinitububixufumotikeva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujixexebekipan.rf.gd/22529511304.pdfIn PDF document text
    • http://poresiz.epizy.com/how_to_set_up_jetpack_verizon.pdfIn PDF document text
    • https://a44a9d9e-3ce9-422e-9b5d-83ef2d4925cb.filesusr.com/ugd/3234e9_0a4ba6f113df404380d059be696d04ad.pdf?index=trueIn PDF document text
    • http://penalat.rf.gd/basic_english_assessment_test.pdfIn PDF document text
    • http://fonobufusig.rf.gd/nodulib.pdfIn PDF document text
    • http://kodosalepixalan.epizy.com/beretta_92fs_da_trigger_pull.pdfIn PDF document text
    • http://vezonufibil.epizy.com/canon_pixma_mg3520_wifi_setup.pdfIn PDF document text
    • http://rojegasofibi.epizy.com/47232692310.pdfIn PDF document text
    • http://sebiwafexudezo.rf.gd/ppt_templates_medical_free.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/theatre_the_lively_art_10th_edition.pdfIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_7205526021664a98afb17d4e49c7a0af.pdf?index=trueIn PDF document text
    • http://xawatutosewo.epizy.com/44255366001.pdfIn PDF document text
    • http://nabapuxamiluj.epizy.com/garezuwakuwepizusuped.pdfIn PDF document text
    • http://roxubimolileko.epizy.com/nfl_injury_report_raiders.pdfIn PDF document text
    • https://b9e1b105-38e0-4bbf-baad-90de1e2021e1.filesusr.com/ugd/432b07_d396475c457a4e048bd791841ea147b1.pdf?index=trueIn 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_off0000edd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD6 5144 bytes
SHA-256: b1117a58ace418aafbe93fa16abacbf563b97034fb560dd5475140cb7394e8db
font_01_sfnt_off0000ff40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF40 10756 bytes
SHA-256: 7c5240d8054ca97691f546dbcdf25685cef68b5cf3f118acb7ba2bea28e7668b

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