Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ddb7d86c3ac5c59…

MALICIOUS

PDF

88.0 KB Created: 2021-04-03 19:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bbfa676bf28555eee21866e2bb79155e SHA-1: 12e7f37a5a7aebd9ddbc66a2cf9f9bba9f8118b1 SHA-256: 5ddb7d86c3ac5c594dfcdbb487370f9c611cc299c797b4a644c4252d65346ab6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/strik?utm_term=kiss+the+rain+soundtrack+movie PDF link annotation
    • https://cdn.sqhk.co/dutimapo/hjcYvjc/pujidiketiduzalil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390638/normal_600643f584256.pdfIn PDF document text
    • http://zeruxejobimal.mywebcommunity.org/angiospermas_caractersticas.pdfIn PDF document text
    • http://zafenoro.scienceontheweb.net/94166442096.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404990/normal_5fe7df1185c3d.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/Mnjc4gi/81729771879.pdfIn PDF document text
    • http://tryraisins.pro/20110010267roovv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490917/normal_604d032dd588b.pdfIn PDF document text
    • http://reduslimitaly-official.site/wamupi5x4jo.pdfIn PDF document text
    • http://olivamebel.com/99003863907wmadq.pdfIn PDF document text
    • http://tetoxukipim.getenjoyment.net/change_to_word_document_on_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5fcf7a2f7cab8.pdfIn PDF document text
    • https://cdn.sqhk.co/laxegipo/mAjcijd/27606356435.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/78661234800.pdfIn PDF document text
    • http://bezerojiw.scienceontheweb.net/how_to_answer_a_call_on_plantronics_headset.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fccd5518-64e1-462d-9dbe-8d8d8a19ca7a.filesusr.com/ugd/eb005d_8f814887a0464cf6b5cff688f940d8f2.pdf?index=trueIn PDF document text
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_a984fb07a3014955913c61bbd67d7760.pdf?index=trueIn PDF document text
    • https://c580675e-8888-491d-8c80-3106eaac86fb.filesusr.com/ugd/c8a981_c5ee3ff2dc134cbfa641ce8646fc9f33.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98dcf32-3533-4493-9345-46d59a2ea879/34921111235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc2c7540-65ca-49de-bb39-f424ce5cec73/talomuru.pdfIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_087d1d805d3346e69f08e8f5d093e3a1.pdf?index=trueIn PDF document text
    • https://d2ea4bfc-f92a-4379-acf2-d9b69981ddb7.filesusr.com/ugd/739437_e84f3d7d077e4e9a862891cbba6f2908.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a704586a-5be1-4835-a5b7-50e74044ff1e/subupafesokubuvokuzu.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_off00011a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2D 5240 bytes
SHA-256: 90c992cae5e9063a064116c86680dc5a6d1aa6443927fb3542c62075ee18b34d
font_01_sfnt_off00012bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDA 11728 bytes
SHA-256: 0268619b52a9ef6d618527aef36eef28924d18a6a3757d9cf7116c8518d71a03

Open this report in the interactive analyzer, or submit your own file for analysis.