Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbf38d2e629d523…

MALICIOUS

PDF

77.0 KB Created: 2021-02-24 22:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1ee769081282f3a65fa46aa3d888695d SHA-1: 98f03adbd5dc14c6ae5c339742cc363d8a8baacf SHA-256: bbbf38d2e629d52381970531e3a86162ea1b31d5a3c99d1c2cb1f65427ae1ca9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://crophysi.ru/123?utm_term=photoscape+x+pro+free+download+for+windows+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452389/normal_5fd63eb9da92d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487888/normal_60118de69f7c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_601a37b469d35.pdfIn PDF document text
    • http://pazujiz.mygamesonline.org/sims_3_super_patch_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/pufuxogife/NhjborX/19649562525.pdfIn PDF document text
    • https://cdn.sqhk.co/xekutenupi/ianio9b/the_farmstead_apartments_santa_rosa.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/zawujalixenow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_6014906721a60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392209/normal_6010a3c07b5f8.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/56374886148.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/hfb0Chj/new_digital_ringtone_mp3_download_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/iffigUi/garojewaxotuxupitanuz.pdfIn PDF document text
    • https://cdn.sqhk.co/mofokamibe/Fgdgihd/mewusetedop.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/CJPMGjb/10781935786.pdfIn PDF document text
    • https://cdn.sqhk.co/xowuzaseku/jbgfjfF/lekuf.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/Dhgggq6/66779860498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446275/normal_5ffcd7ab1c83c.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/ihgbicF/dope_wallpaper_hd.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/how_do_you_clean_a_bissell_powersteamer_powerbrush.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ginowane.onlinewebshop.net/sutoxeworatebevixejexowu.pdfIn PDF document text
    • http://ligoroxenafof.atwebpages.com/judipesokivu.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/semesewexemuv.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_off0000f0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 5596 bytes
SHA-256: f5e212f35a3482216cde724c2e9a85f86aa6a6a45bc19bfab6ec8da999f5792c
font_01_sfnt_off000103d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D5 10084 bytes
SHA-256: 69673f045ab5f72fcd68b21b478900c1bad03f78a9c8ccd33a64c918071e112d

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