Malicious PDF — malware analysis report

Static analysis result for SHA-256 844205e71c6833b5…

MALICIOUS

PDF

72.1 KB Created: 2021-02-19 15:25:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a72a6ed641d19c98c4d9fbf48d7c43dc SHA-1: bbc0ec6ba4fdff349fa5da9b003da9f7b0b39928 SHA-256: 844205e71c6833b5f3605d66bd1fa2f39a4d53a48f6282765c2fd655f017fb2a
126 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
  • 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://jacksth.ru/123?utm_term=big+green+egg+turkey+size PDF link annotation
    • http://lekezoreg.22web.org/15621225871.pdfIn PDF document text
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/6013358.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/c84111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453907/normal_5fd2c39083731.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461509/normal_5fe1573f76bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_600bb781aefa3.pdfIn PDF document text
    • https://tenasubilojeviw.weebly.com/uploads/1/3/5/9/135993528/3499335.pdfIn PDF document text
    • http://reetodo.online/pulsating_stars_stellarish8mga.pdfIn PDF document text
    • https://bamiwesuwo.weebly.com/uploads/1/3/5/3/135390748/mexibadoloxap.pdfIn PDF document text
    • https://rolowuwojudazap.weebly.com/uploads/1/3/5/3/135302881/waxasofarefuw.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/46005d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/ateroma_20_bula.pdfIn PDF document text
    • http://nemabufebuxabo.epizy.com/7995341745.pdfIn PDF document text
    • http://vejawotivifima.rf.gd/48596722394.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/bufejanutamexug.pdfIn PDF document text
    • http://wowonija.epizy.com/nitecore_new_i4_battery_charger_review.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/60819000009.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/black_veil_brides_songs_free.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_off0000da6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6C 4876 bytes
SHA-256: 05929b5c24238022652b49aeca2f76afac131a592d94b0a7c617c15aaafad2d2
font_01_sfnt_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 11364 bytes
SHA-256: 352e42509f51f5f81411a18d70e89005623d1e2aa93c17becdc0cf35c1e2ce8c