Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d19b450a6b6d39…

MALICIOUS

PDF

76.2 KB Created: 2021-02-17 19:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 74f588f3c851fbd482c143a6c4de8fc6 SHA-1: 96940912b07eda7bc1f9b2d1bb27e2ca9ab1cc79 SHA-256: 26d19b450a6b6d397fea5c5e5e21b04cca3a051a5cd816259d6976b51e604d03
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, disguised with a lure related to a popular movie. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=the+secret+life+of+pets+full+movie+2017+in+hindi In PDF document text
    • https://cdn.sqhk.co/tokexinolelu/tiaIege/pajosekegojojibilit.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/JhizgeT/65066451994.pdfIn PDF document text
    • https://kefuvarunif.weebly.com/uploads/1/3/0/7/130739830/e3e7caf95c20e94.pdfIn PDF document text
    • https://vagapirub.weebly.com/uploads/1/3/4/6/134648019/6783381.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/iifwnnI/95629748289.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/GifM8jb/misikinukelitipowu.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/hjXiiz3/best_lock_screen_password_android_device_manager.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/QgdBric/xomaki.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/hg9coCb/stickers_naruto_whatsapp_espanol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivala/12879836388.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/lagu_adella_full_terbaru_2019.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_off0000ecca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCA 5600 bytes
SHA-256: 3dcdc322baeb9d3846da2a553b0c55565bf0dec52dccef4b0a680e710b0e38dd
font_01_sfnt_off0000ffc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC3 10512 bytes
SHA-256: 8abe3c5acaac00d6de833a3f08aa24d41e11df68852483773e2b7d2696c35a02

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