Malicious PDF — malware analysis report

Static analysis result for SHA-256 667e7a774f292f66…

MALICIOUS

PDF

69.9 KB Created: 2020-11-18 07:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7a7603b9cbf6e71cd89f68f72793d335 SHA-1: 6a79104f159ad56eb6b29487be289307953a2edf SHA-256: 667e7a774f292f66f22aca24f9f795fce49580a125d42c9d86127659abb77456
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://traffmen.ru/strik?utm_term=pilates+ball+exercises+for+back+pain'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://traffmen.ru/strik?utm_term=pilates+ball+exercises+for+back+pain In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410027/normal_5fa103929e431.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f87a645e74aa.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://uploads.strikinglycdn.com/files/9aa2bb7f-b167-468c-975a-9ba3c5f3ac28/26697064169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c640057-df4b-4f61-a1b8-6665cf9b93c4/ragupamowav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2437d5ee-d347-4e9f-b1da-ae7aa32b6e68/35914258310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b494a28-8f54-4c21-bcf1-3a1cf35b81a4/tiredemedilexidoxop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/326c3d29-9fe0-4d94-aca3-10aeea1718fc/vodosemex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e925a4db-4934-4e30-a6aa-fc6da02238cb/zuzijiwen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d599ce33-3585-4e5d-9dbb-389da08282a7/zosizesesuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba24086e-263c-4ebd-92b2-37aeccb61ff7/rubowuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f340c3-d198-4228-abf1-5653e802fa5f/32674313150.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c81c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC81C 5072 bytes
SHA-256: 867fbf9742c83d22c4ca84b8ffb93e03ce38f94f91a4d435d9c84b8c58db3a1d
font_01_sfnt_off0000d95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95B 10452 bytes
SHA-256: 1e11679a5f1228efa4a2029170146bb22f5d0bfd8d158ab6cc2f986ce0c23eec
font_02_sfnt_off0000fd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD07 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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