Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b31323d13f8af6…

MALICIOUS

PDF

65.1 KB Created: 2021-02-12 23:30:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 87ac38a63dbcd8ff91af6489d0722756 SHA-1: 1ff30d9f19b5f7c4338dba98231697f29869b139 SHA-256: a6b31323d13f8af6d1e95968dcdbac06ba27a4b24ceb0131f8c455ee72a9b353
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=destiny+2+strategy+guide+pdf+download In PDF document text
    • http://runmasten.online/febemernbc8g.pdfIn PDF document text
    • http://my-favshop.online/fapowibamadutilom8ko0b.pdfIn PDF document text
    • http://narelavupes.22web.org/aeroplane_punjabi_hd_video_song.pdfIn PDF document text
    • http://tk-time.site/459456565466estk.pdfIn PDF document text
    • http://xtw2.club/callanetics_bungenoo79e.pdfIn PDF document text
    • http://sesosorav.iblogger.org/39594085063.pdfIn PDF document text
    • http://walkover.me/what_is_biometrics_ielts_reading_answers8oy0m.pdfIn PDF document text
    • http://wowezixuxaxu.22web.org/nonprofit_collaboration_agreement_template.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/0fc1d9d1089818a.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/el_libro_negro_del_comunismo_gratis72kej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kipafiperugava.epizy.com/ldj_sheet_metal_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/setup_eclipse_ide_for_android_development.pdfIn PDF document text
    • http://kojodidekojamu.rf.gd/phone_ringing_sound.pdfIn PDF document text
    • http://fudixuxutinizow.rf.gd/raginipusajowu.pdfIn PDF document text
    • http://meduzifovum.epizy.com/twin_xl_fitted_sheets_for_adjustable_beds.pdfIn PDF document text
    • http://kisetifanuxutol.epizy.com/zajifisiguzanole.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_off0000c159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC159 5532 bytes
SHA-256: 5010961a136cf9d465b885822cfbaa9cc7d221240c4dd00da91e5c23c1f715cb
font_01_sfnt_off0000d45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45B 10568 bytes
SHA-256: 77a98444a61729858fc0135945d1dc7a6986173e55ab010aa8e8a22134b54b26