Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deea152713ea97e…

MALICIOUS

PDF

64.0 KB Created: 2021-02-21 14:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b36db7a3ba9a3b170e5b8bdc99a16d7f SHA-1: abf39620460549a6293f6f04eb2a9dec52fff9d9 SHA-256: 4deea152713ea97e3f19cd01edfea73809ace3f81f2f417bc447b2743d8c4995
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=how+do+you+clean+carpets In PDF document text
    • http://mavpa.fun/cardiopatia_hipertensiva_pulmonar7sw7k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474218/normal_6018a1ea18b94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369630/normal_5fe0194b830f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_5fcaa480d984a.pdfIn PDF document text
    • http://the-job.ru/pony_town_expression_commands05lt1.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/rocketbook_app_for_androidot49w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_5fd67a73133ee.pdfIn PDF document text
    • http://rurojewof.22web.org/33433293040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452382/normal_5ffb44a2df79a.pdfIn PDF document text
    • http://whitecheat.xyz/lukafetudamunadoreros3xt0i.pdfIn PDF document text
    • http://foyou.store/overlord_light_novel_volume_12_sub_indoykntn.pdfIn PDF document text
    • http://swiss-gear.shop/96809811017rv7pe.pdfIn PDF document text
    • http://chambrehq.xyz/pumutupisexowovatuveku4mapg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461483/normal_5fdf2c52347d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384652/normal_5ff4fbce3cb9f.pdfIn PDF document text
    • http://umkatrade.ru/694835671950et5t.pdfIn PDF document text
    • http://gufutaca3.xyz/pdf_to_word_converter_apk_premiumxha8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tijiwef.epizy.com/bye_bye_man_imdb_parents_guide.pdfIn PDF document text
    • http://denaruzunus.epizy.com/ysoft_safeq_installation_guide.pdfIn PDF document text
    • http://biwovake.rf.gd/video_editor_app_for_android_phone.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_off0000bdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF7 5220 bytes
SHA-256: a2adf55bc8bf6a094cd36d66fc06ffe29e9c69ce21d42fbea94abd44efeaef70
font_01_sfnt_off0000cfdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDD 10332 bytes
SHA-256: 666c4d81dc9163f461ff4d17f4856a92c4fc3297fda19e08a7dc315a013ef5bf

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