Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb12dc9b57718712…

MALICIOUS

PDF

67.9 KB Created: 2020-12-19 01:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3caa3645f98f688351c3c1d924e318bc SHA-1: 187d907bf14f4703bec12500b3401998d83138d2 SHA-256: cb12dc9b5771871281a26bf37c41b8ef61da7402a5139acb78c95b0f830ad855
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ggtraff.ru/strik?utm_term=814+area+code+location+us In PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/dawisuru_letinili.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/jituregugepovelagene.pdfIn PDF document text
    • https://rewumakabaw.weebly.com/uploads/1/3/4/8/134856880/6016378.pdfIn PDF document text
    • https://sinekagu.weebly.com/uploads/1/3/4/8/134855021/zogisagik-jizenakogi-fatakataji-tekuwo.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://s3.amazonaws.com/suzujewa/software_site_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf5999b1ed035389ff233/1606284701451/dixapisisuzebemores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef0a7b18-3340-4789-b245-741c36f73f2f/xunezivuj.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/asphalt_8_hack_android_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67285d26ff1194f9a01e4/t/5fd0fbdbd106614894287093/1607531484400/nipinofutex.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc181a368612547ed627098/t/5fc79c3e56cd4459b3bd75e0/1606917183137/pimudug.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0055e5687f52b6b7c450a/t/5fc53d16f8cdb769c68e2606/1606761751393/edina_public_schools.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36746104edf1d7790ed06/t/5fcd7ed324c49707d3362406/1607302870784/73823884028.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05B 5052 bytes
SHA-256: b87a1bac8f43d98e6cecade2878ff30c9b8029bf7e7499e7fd604b162d9c2528
font_01_sfnt_off0000d18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD18C 10492 bytes
SHA-256: 9a6e4d138e1782a1972dc23af10ab15b0296a54b97a053dcf96c1dc5d95b90d3
font_02_sfnt_off0000f547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF547 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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