Malicious PDF — malware analysis report

Static analysis result for SHA-256 72041e46a75f950f…

MALICIOUS

PDF

78.7 KB Created: 2020-11-19 23:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 73218d169feb61157619b0f6957892b9 SHA-1: 166c3f38c8e0fdfef7e26c9ecf6551021bb7641c SHA-256: 72041e46a75f950f2237f466bf2fc0170f35b8e716960b57d677b3165d5ac825
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://ggtraff.ru/strik?utm_term=etude+de+cas+marketing'. This indicates the document's primary purpose is to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ggtraff.ru/strik?utm_term=etude+de+cas+marketing In PDF document text
    • https://tolixolosunep.weebly.com/uploads/1/3/4/4/134403343/jatudivof-valekuloze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386851/normal_5fad9e760f264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f8a4bdd3dd17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f870bba5032c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410983/normal_5f9bbae04cf74.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/c21cc236-9e7b-4701-a722-057c2cc36ff5/21735116584.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afdbd47a-80ee-4a93-b46c-c7340f80a1a2/lgbtqiapkah_full_acronym_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/mapa_metro_brussels.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0458b9a-241d-44e3-a4ea-fa9decedfb7a/zozusapesana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cebf3ab-6a9a-4847-9080-a8d09abf9474/83577090145.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_off0000f385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF385 5248 bytes
SHA-256: 8f06e9a8faf062e974ad69f1ff6bd6da9ee1cd64eb1c9ad998fd9196df7423f5
font_01_sfnt_off0001054d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054D 12732 bytes
SHA-256: 2cb5251494da59c343b1e81ff72b8d2e7de15f8112a4b975bfa46d35730757f1