Malicious PDF — malware analysis report

Static analysis result for SHA-256 9480d617a4e1dbe8…

MALICIOUS

PDF

77.4 KB Created: 2020-11-22 09:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6b560c9738de979c660a994083b0b6f9 SHA-1: 9faa9a5a25c9b6c88afc5b393835b90934f3414e SHA-256: 9480d617a4e1dbe8ea5e13c2cb08ccea00a241b9bcf0620156d5fababb1811c1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://cctraff.ru/123?utm_term=adyashanti+emptiness+dancing+pdf'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The document body, though heavily obfuscated, appears to be related to the lure text. The presence of embedded URLs and the ML classifier output strongly indicate a phishing or malicious redirection attempt.

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://cctraff.ru/123?utm_term=adyashanti+emptiness+dancing+pdf In PDF document text
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/dubaludodiku.pdfIn PDF document text
    • https://vepaxanejabag.weebly.com/uploads/1/3/4/3/134317352/bamem.pdfIn PDF document text
    • https://wepubimixojipo.weebly.com/uploads/1/3/4/5/134584552/dukugaxobadaxoz.pdfIn PDF document text
    • https://relugudikovok.weebly.com/uploads/1/3/4/2/134265752/4e0266d2.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/d26a52ad-df4d-4260-89f6-3b2e1bd2b1fa/86248968470.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/59736556650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc688e22-3202-4f80-9e51-f7da1e3bd341/canciones_sindicato_de_camioneros.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/wiketinavupuroduwelitilo.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/10397914937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf47645-15d9-4153-9da4-5ac32f6a3b81/foxizixuguwusema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/180a62c0-626c-4e2f-9257-c6aabba9649c/fenugiluxefolobem.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_off0000f19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19D 5532 bytes
SHA-256: a1612452e08e6f2c9fcb2216c1980cd404ca1d5fe142f78f50a50fa1dadc105f
font_01_sfnt_off00010460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10460 10800 bytes
SHA-256: 2714bf7bd289818c3d1d9659f811508565f4c3de85eaad804dc54ec29f6d3e0c

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