Malicious PDF — malware analysis report

Static analysis result for SHA-256 7acc76ad6f77a4da…

MALICIOUS

PDF

66.2 KB Created: 2021-02-26 18:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 348d3ab5b879e30221c62e9955d54aa0 SHA-1: 2121fa446eadb29e32cfe4fc1f7ebf770cc2ffba SHA-256: 7acc76ad6f77a4daebf566a52186a01e7d42c5d61ec3495630bf48ff86e49aae
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://baarspo.ru/award?keyword=scatter+plot+worksheets+grade+9 PDF link annotation
    • http://senteber.site/16253360427wi83z.pdfIn PDF document text
    • http://jogegeve.22web.org/jiwexinufiverugovawa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451220/normal_6037b16191a8d.pdfIn PDF document text
    • http://dvestideyli.xyz/ios_13._2_public_beta_27gtey.pdfIn PDF document text
    • http://ipoteka.net/database_reliability_engineeringswsr2.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/g6hjNif/77573984272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410702/normal_600a771e46195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_6015c451d827b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463538/normal_601913049b515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480745/normal_6020a08751969.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387817/normal_5fe1a91fb2e1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461249/normal_5fd93d93c5b81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477878/normal_5fced00045a7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385863/normal_5fceea572c3f2.pdfIn PDF document text
    • http://kurewegunopef.66ghz.com/sulatumuludes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5febed022c6e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gurelijefumodaw.epizy.com/38503767050.pdfIn PDF document text
    • http://xajebanexored.epizy.com/80701029683.pdfIn PDF document text
    • http://zesositug.epizy.com/20884481954.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_off0000c5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C3 5752 bytes
SHA-256: 5ff10244913ac2cc5841360096901be42ad0b586f916451fcd87ab27fc6268ec
font_01_sfnt_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 10000 bytes
SHA-256: c7863962b23d8a485f2910b1fe0c5bc321afaf169bdb801f56dded170e37fbcc