Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7c2a14961483c1…

MALICIOUS

PDF

71.2 KB Created: 2021-02-21 13:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: d90e6253061cd847a37d5ce31ea6037a SHA-1: 92641bc599e58dea62f489804e8bc1ef3bf61978 SHA-256: ea7c2a14961483c165f3fbb6272af195dca48de1e98008a77a34bd5d107109f7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/wb?keyword=verizon%20fios%20router%20g3100%20wps%20button'. This URL is likely used to phish for user credentials or deliver a secondary payload. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/wb?keyword=verizon%20fios%20router%20g3100%20wps%20button In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379720/normal_600a20c159d12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391340/normal_5fef53e0afa79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420775/normal_5fd2e02aee377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461498/normal_6017cca00845d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_601b524c16def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_6014d3f4e251f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387226/normal_5fff3768efe69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_5feb09d196552.pdfIn PDF document text
    • https://cdn.sqhk.co/gubogezemazo/WiaWgcs/54515579961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410191/normal_601c86d4b8c8d.pdfIn PDF document text
    • https://cdn.sqhk.co/tokokoxisuf/Rjdibsu/37842066073.pdfIn PDF document text
    • https://cdn.sqhk.co/fejukomus/jagdeAf/71325974914.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/dbieNWj/vuriboduwurisezaguwini.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501045/normal_5fd10bf1e5ff0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mubefula/peteluzatidozesi.pdfIn PDF document text
    • http://gumikibe.rf.gd/ravpower_fast_wireless_charging_stand_15w.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/browser_for_android_phone_best.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/current_ethical_issues_in_information_technology.pdfIn PDF document text
    • http://novegiw.rf.gd/automation_framework_development_with_selenium_c.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC41 4428 bytes
SHA-256: b344790b7e56ea5a7b209525159afc47e3e3d454db7230dab82bdc60b7d2decd
font_01_sfnt_off0000cba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA1 5316 bytes
SHA-256: d5041887dff1bb329239197ad5581cd383840a233e3e5773230665adf35481fb
font_02_sfnt_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 10272 bytes
SHA-256: 209a7ee9b46eba5ae595d572a6b4d36eb19fb37188ff1035a1c723e9c2b86830
font_03_sfnt_off000100f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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