Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f86560d4ae6770c…

MALICIOUS

PDF

74.9 KB Created: 2021-04-05 23:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 89ec98028faaf8f86a8808e402adcfe8 SHA-1: f9fc0624034d72d44eb7451debdd4021a6eac66f SHA-256: 1f86560d4ae6770ceee7da32e592e1697d8e255d975797528c6a9785cfab1180
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly and AWS domains, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://pekatube.weebly.com/uploads/1/3/5/3/135393066/givegani_gilijokov_venadunekiza.pdf In PDF document text
    • https://cdn.sqhk.co/kewusikata/WijThcO/descargar_whatsapp_plus_android_gratis.pdfIn PDF document text
    • https://liritetujom.weebly.com/uploads/1/3/5/3/135310948/542977.pdfIn PDF document text
    • http://bumaga.bz/8633524109znjzo.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/wupekibuwe03b.pdfIn PDF document text
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/kuwewalive.pdfIn PDF document text
    • http://afracheat3.xyz/rugowaxeziw7jkm5.pdfIn PDF document text
    • http://alerma.ru/wwe_championship_fighting_gamestwfee.pdfIn PDF document text
    • https://fitelibisubun.weebly.com/uploads/1/3/3/9/133987071/resujo-zikowu-dilubodemi.pdfIn PDF document text
    • http://hairsprof.ru/vaxonozosef3luav.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/bhdiiuQ/jibemazilulemuxazaboxuma.pdfIn PDF document text
    • https://vupebuxotilejo.weebly.com/uploads/1/3/0/8/130814562/5d217.pdfIn PDF document text
    • http://migriruy.ru/suvuwujerazutemipiol0ju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/B9wesDdUo4k/wb?keyword=alcatel%20a392g%20hard%20resetPDF link annotation
    • https://s3.amazonaws.com/zazelujeju/guided_busway_stagecoach.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/the_official_cia_manual_of_trickery_and_deception_review.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/carl_schmitt_political_theology.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/tajweed_rules_of_the_quran_by_kareema_carol_czerepinski.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/2018_movies_hd_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/pillars_of_the_earth_ken_follett_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/begum_jaan_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/45827286065.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/43070753534.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_off0000e452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE452 5640 bytes
SHA-256: 3e5c71893d12fef917af202df2f2b10893751b73b65878061f4916d112644883
font_01_sfnt_off0000f775.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF775 11432 bytes
SHA-256: f1fbad4134c14df11c84732a28df9ee3723b19719cf4bbe4578590ebc3b49ac9

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