Malicious PDF — malware analysis report

Static analysis result for SHA-256 a781daed43a0b2a0…

MALICIOUS

PDF

67.4 KB Created: 2021-02-15 09:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 39018b5b1cd19995992dfd88d6404612 SHA-1: 7c94d101443fdc2be980db0b20b6d8c619f88c32 SHA-256: a781daed43a0b2a005eb4241f64e6dd2acac54899ccc37e97a9d3c63cd616304
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=meek+mill+wins+and+losses+songs PDF link annotation
    • https://nozabuzewetuk.weebly.com/uploads/1/3/2/6/132683147/40aa940a.pdfIn PDF document text
    • https://rasazumeg.weebly.com/uploads/1/3/1/4/131454762/sofepebajok_lulorilazabafut_reguvoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/vUij5jj/wijujexizarorower.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/64geQ61/nuts_and_bolts_store_in_san_diego.pdfIn PDF document text
    • http://shtampshop.ru/90081778027cprp5.pdfIn PDF document text
    • https://riwobasafogad.weebly.com/uploads/1/3/3/9/133999818/logezokefux.pdfIn PDF document text
    • http://mmmmmme.space/fezixanabopirewedr7wj.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/FHSwhbK/jojafivubawadosom.pdfIn PDF document text
    • http://kieverts.xyz/holiday_green_day_sheet_musiclhi8l.pdfIn PDF document text
    • http://devicesprotectionforusers.site/complex_migraine_news_reporterjgvhx.pdfIn PDF document text
    • http://metagopu.22web.org/70819232890.pdfIn PDF document text
    • http://shopsmmv.site/busawabipadojezix3c62p.pdfIn PDF document text
    • http://govnosiakxws.online/wupidutukaftxi2s.pdfIn PDF document text
    • http://tonagruz.ru/bezubaan_abcd.mp3_song_free_downloadtxlk9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tafekeremo.epizy.com/deviantart_button_template.pdfIn PDF document text
    • http://zujugefov.rf.gd/sebi_guidelines_for_public_issue_of_ncd.pdfIn PDF document text
    • http://pababevo.epizy.com/56755971237.pdfIn PDF document text
    • http://gawexerexi.rf.gd/48444135860.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_off0000caba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABA 5212 bytes
SHA-256: 818d4e52ed820e5098048ee7b496ccdb5c97821eac0e1c927efc2c1d80eaa22f
font_01_sfnt_off0000dc83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC83 10640 bytes
SHA-256: 99051c0fcce891c4285e4ed36cdeeeeba483827c59fee13c8a2e2414430138d2