Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2ae83fd7e459a9…

MALICIOUS

PDF

74.9 KB Created: 2021-03-30 02:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1fcaf71d962cde860f3f1b9193fae72d SHA-1: da5ba2c31beebc9eb584377d7236a3e3448d6c0a SHA-256: 2c2ae83fd7e459a967a13aad4c89c240cc5af4cfac9ba7a7286c54ee3a650676
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to 'bright line eating soup recipes' and uses an SEO redirector to a phishing URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the PDF structure and embedded URL point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://fokemale.ru/strik?utm_term=bright+line+eating+soup+recipes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477139/normal_600293727812e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_6059ec512a360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_6061c2fb83679.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488332/normal_5fe46be92dff0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484812/normal_5fc80ad9700cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495973/normal_6006d8a779b13.pdfIn PDF document text
    • http://nimened.66ghz.com/naxegelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424361/normal_6059cccf8acff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vavuliremu.rf.gd/lulazizimijab.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/super_mario_bros_html5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da6bc8f-dda1-413f-a761-27c082ed822a/quicken_patch_2015.pdfIn PDF document text
    • http://vedeniw.rf.gd/performance_appraisal_appraisee_comments_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/72669521874.pdfIn PDF document text
    • http://majuzudotalu.epizy.com/mavaguvigomojejefovil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d467f780-20b4-4644-91d9-afb3cef63e71/zig_ziglar_see_you_at_the_top_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/early_version_of_internet_explorer.pdfIn PDF document text
    • http://telimivakapot.epizy.com/goluvijanuleteluvebafome.pdfIn PDF document text
    • http://puloxivomavari.epizy.com/lifogifozogawajawiganut.pdfIn PDF document text
    • http://mobotifiriw.epizy.com/xarodomasejimuv.pdfIn PDF document text
    • http://rasukadixekurij.rf.gd/27916500893.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_off0000e66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66B 5244 bytes
SHA-256: 50e68fa6d82cd18a0f2da2860512d47f880408d29d56dbde1eb8c2fbf6b572f3
font_01_sfnt_off0000f83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83D 11220 bytes
SHA-256: 18da673c7e5ce09309b3ac8b47c316177c3775fd81dd5141570c2e5b4e68d80a

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