Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1fa2d1bd1a0cfb7…

MALICIOUS

PDF

130.8 KB Created: 2021-03-02 05:44:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2ebd194089cd72db2944b58e52fc2e39 SHA-1: 34d64315232f97777e8a48c0168d1c4719b068dc SHA-256: f1fa2d1bd1a0cfb74452184bba03ab84e1d2184c3638e82e84df61330434f1da
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. The heuristics indicate it is a link farm on disposable hosting, with a lure related to payment redirection or bank detail changes. The embedded URL points to a site promising 'fastest ways to make money from home', suggesting a phishing or scam attempt.

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://botokaw.ru/strik?utm_term=fastest+ways+to+make+money+from+home PDF link annotation
    • http://reznitskygallery.com/elevation_church_worship_team_guidelinesz73fc.pdfIn PDF document text
    • http://korecos.ru/dd_5e_character_sheet_tutorialuxapo.pdfIn PDF document text
    • http://getyourcredit.info/mefukegaxerexipikukosofa6yjtd.pdfIn PDF document text
    • https://cdn.sqhk.co/lemusezilaz/9YOMieN/67275044269.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/macmillan_english_language_book_3_teachers_guidemf0qh.pdfIn PDF document text
    • http://ru-order-687646765445.art/jovilelegedenuzesurigikafs41o.pdfIn PDF document text
    • http://markettop.pro/kawuvosesuvinigosasapua32d4.pdfIn PDF document text
    • http://chelobaka.space/38185812536n8496.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/development_through_the_lifespan_downloadbu5a3.pdfIn PDF document text
    • http://danivufulof.iblogger.org/ripapupapolatuvopona.pdfIn PDF document text
    • http://jadusugogawal.iblogger.org/15287767335.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://garulolit.rf.gd/93876295267.pdfIn PDF document text
    • http://nesasodatujor.epizy.com/wagapu.pdfIn PDF document text
    • http://roxutudutupit.epizy.com/betiya_song_kulfi_kumar_bajewala.pdfIn PDF document text
    • http://xutirekivob.rf.gd/metformina_850_mg_efectos_adversos.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_off0001c6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C6D3 5188 bytes
SHA-256: 1b18bfe8200822a06ccc2f2019be18766f54dd8a908bc16e3695d8142a30dff6
font_01_sfnt_off0001d86d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D86D 10876 bytes
SHA-256: eea1e5403f4f3b441f1e2fe631815efc1f42f037c66116278bd7318508a51ed9

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