Malicious PDF — malware analysis report

Static analysis result for SHA-256 102b927c4dcd593f…

MALICIOUS

PDF

65.1 KB Created: 2020-12-17 18:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3681d33d4b5690aba07099ac425e4b05 SHA-1: 22152776aa72913eb7635e33a7342b3d2ca69c98 SHA-256: 102b927c4dcd593f8b30e1c7ed282ceda2bfb6c657370e600bf6fda0d6eed175
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm. The presence of a 'download button' heuristic suggests a lure to trick users into clicking embedded links. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?utm_term=san+antonio+gunslingers+2021 In PDF document text
    • https://povelelowu.weebly.com/uploads/1/3/4/3/134331265/gonupakife.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_5fd930e52833e.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/51968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5fb7bf7f57c14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475997/normal_5fad9f0aad77a.pdfIn PDF document text
    • https://kowepesabileb.weebly.com/uploads/1/3/4/6/134635017/5418390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5fd8d4ff66929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_5fa12a86e44b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc78ba439503a47f6fe0002/t/5fca90078e83f25161164ff9/1607110664416/25275677960.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcded5cf1fc5b0afda755ac/t/5fd643b196ed101a3e3bc857/1607877554148/offline_scrabble_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d0066c8-05ba-44f5-b0b9-12b841b94774/12685694961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c63667a5-28ed-429f-936f-10ae7132af72/bidiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc302ce16f6d44b07cc72db/t/5fcedeac57846c5b83468d7a/1607392944941/xobibub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1858bf7cf8c75402f5531/t/5fcaaf7235f635575f682a6c/1607118707687/ios_store_logo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcef0b1cb3b830a1a304b7e/t/5fd226bbeeaf2774ac962b76/1607607995472/ivan_the_terrible_and_his_son_print.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_off0000c0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C5 5284 bytes
SHA-256: f59fe7e01387793f1290ea70b4c6fbf18e4822f3c981126fe518f45eff58e22d
font_01_sfnt_off0000d2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C9 10868 bytes
SHA-256: bc05e8df5c3c52bca78c6cea6de1f413e407cf8f9e62b2caabb0aa2df9557294

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