Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed273b9930af7ff…

MALICIOUS

PDF

73.9 KB Created: 2021-03-23 03:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 79667b2cd442e97ea4f0781170d495a9 SHA-1: 30295a6c0e167559d0f232b3df57de7067e96dda SHA-256: aed273b9930af7ff0e8030098454d80ce8ca2f5103f9d3f0b5419d8f74559226
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=death+of+a+nation+download+movie In PDF document text
    • https://static.s123-cdn-static.com/uploads/4383917/normal_5ff0058e48f42.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/stainless_steel_microstructure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495975/normal_60093074d8047.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/tchaikovsky_symphony_6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_604e3d29e04bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379733/normal_5fc744fbdedc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2257dbaf-28a3-4864-be5e-42d5d11d70f0/tukoteredufusofuxuxik.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/numawixepejivitekuzeju.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/inequalities_rules_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/sick_leave_request_email_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bd76feb-c07c-4976-8dda-3b90711a42d9/willy_wonka_and_the_chocolate_factory_movie_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc706d1d-2111-4651-827d-df51b2d029e2/81356903416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0c618a1-b3ab-488f-864a-23bbe07cb460/does_costco_sell_tv_stands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602da8cc-aaf0-41f2-98b0-deff0783010d/all_the_bright_places_quotes_and_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c938f22-f223-4ce4-8416-685f2a4f46d6/17755270861.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/galujerabul.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/couch_potato_to_5k_treadmill_speed.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/avakin_life_apk_hack_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/jebakovilofekawe.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/marketing_management_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dae15f82-3013-4a87-aadc-ae177a4f552a/7599492856.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_off0000e4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E6 5024 bytes
SHA-256: 442eb4445370de148d2ec973f3a39ba64ebf58fa90dc5ec0ef130bf5c022e90e
font_01_sfnt_off0000f5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FE 10584 bytes
SHA-256: 404d446f5895a89ff8224368b9f25edf433f85dc09918579ff1ac0dc2c53edec

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