Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2c4e911485a7ee…

MALICIOUS

PDF

75.4 KB Created: 2021-02-21 21:30:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1781a8773e7bc1045a2252e6e2bdcab5 SHA-1: 18ceeb00aec3d77fe37a1966c1259c5f9e6748df SHA-256: 7a2c4e911485a7eec77ba5f957cbc55ed5420bde22690efa479ad17863b628ef
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=farmall+super+c+parts+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404955/normal_601f7ab55a336.pdfIn PDF document text
    • http://beststudent.fun/kumegatiwi3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465263/normal_5ff890ccdacbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528876/normal_5ff5a7c7a68a6.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/f77Vide/68893166950.pdfIn PDF document text
    • https://cdn.sqhk.co/satijumok/d7Bjgjc/auras_hammer_simulator_wiki.pdfIn PDF document text
    • http://winoraama.space/31701646113vcyzz.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/redegelesibif/captain_america_series.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/bengali_movie_manik_full_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/13912198293.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/45266382691.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/dinelumewega.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/maven_unit_test_coverage_report.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/folger_shakespeare_library_julius_caesar.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/dubai_metro_zone_map.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_off0000df72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF72 5256 bytes
SHA-256: 5a143a4cd8292cca2e76c62e6122c640b31c9c7d57af1efdf6b7a8fc9e43d0fa
font_01_sfnt_off0000f13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 15324 bytes
SHA-256: 7bcb0a34f70070c162ad46a3c029777a4fc2614dbbd2fba1196262bc3a051a22