Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ccd42cd0dfb7e2…

MALICIOUS

PDF

69.1 KB Created: 2021-03-25 01:50:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 05046128e3f29e99509dc2bee8ebb94c SHA-1: d67da35a280ce571101e3d8c658cd6dabfc56172 SHA-256: a7ccd42cd0dfb7e265d7ccc2ef8f24c1bf053b0bf1f9187c5d565f879dda5e4a
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or redirection scheme to deliver malicious content. The document body, though heavily obfuscated, contains a query string that likely serves as a lure to trick users into clicking on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=can+ps3+move+controller+work+on+ps4+vr PDF link annotation
    • http://kigurumi.org/ffxiii_weapons_guide_best_weaponrh1o2.pdfIn PDF document text
    • http://navalny.design/kidopatidawuwemir64dd.pdfIn PDF document text
    • https://wugupuvexiso.weebly.com/uploads/1/3/0/9/130969254/fb3b695112951.pdfIn PDF document text
    • http://usacarins.com/nalulopawivimobosojoziv0llaz.pdfIn PDF document text
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/9146809.pdfIn PDF document text
    • http://tudewulowas.iblogger.org/edital_auditor_fiscal_df.pdfIn PDF document text
    • http://dejafonuzu.iblogger.org/alimentos_agroecologicos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bejitepirisobi.epizy.com/pumozol.pdfIn PDF document text
    • https://05b56818-8b0b-4484-a411-4f1234233f1c.filesusr.com/ugd/e49726_0ba6dc36948244bdae314fb3975f9160.pdf?index=trueIn PDF document text
    • https://6b2d4799-12fc-456d-8881-596234ac9a0a.filesusr.com/ugd/ae8ff6_6e05380e444f442ba73a26934e1f1649.pdf?index=trueIn PDF document text
    • http://xedofaxa.rf.gd/is_ap_seminar_a_speech_credit.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/51554619865.pdfIn PDF document text
    • http://tawenaxogiminax.epizy.com/wezedukexugumakig.pdfIn PDF document text
    • http://lanutovomet.epizy.com/creepy_piano_sheet_music_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/asbog_study_guide_free.pdfIn PDF document text
    • http://donaweraketo.rf.gd/dodabuguxolamozo.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_off0000d1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FD 5452 bytes
SHA-256: b64b3b49266809d5f60c163da3c0afff8290077bcc2d5a285553caed42874fc0
font_01_sfnt_off0000e48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 10064 bytes
SHA-256: 174b5aa4805762ba9e963f530f2cacb33b9dfaad2b1f7176534f3ea7de7fa2a6

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