Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b30e6df7bcfe0b…

MALICIOUS

PDF

69.0 KB Created: 2020-12-17 12:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7ed800f6ac0b05924a17af82c457a4f0 SHA-1: b72b817fe1af5d30bfeb2d85b642d18935dc41af SHA-256: 96b30e6df7bcfe0b1ec3e3a42d29bb49824e7002e0968c269074e50e4ec96a3a
156 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 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 0.9998

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 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.
  • 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://trafffe.ru/123?utm_term=poltergeist+the+legacy+season+1 PDF link annotation
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/3d762b2b1ac366a.pdfIn PDF document text
    • https://bekijarodik.weebly.com/uploads/1/3/4/6/134617997/negasezufit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465537/normal_5fc7389d49319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5fa75b67c756f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418984/normal_5fab73942a68f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408589/normal_5fc3b5bc26a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5fb4281f6ff45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403413/normal_5f9205121da5b.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/6ffbb44d-e21f-4210-b7c7-67b94c82863f/25505481091.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/kubevevisunabelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e71cd83-c0fb-47b5-9de3-d5de950a9034/71410737508.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/rivibeta.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13f7d5687f52b6b837984/t/5fcdd56d8a55f2188b9916ee/1607325039433/zedap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1945f2bbd7406580b5c60/t/5fcc70ac920f47545b8bdf36/1607233725811/sanepesevuxuzobixujap.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_off0000c026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC026 5004 bytes
SHA-256: ff6290eb70967fceddaafecf18346175d0dd21f2be40cd18c47d5f118b952735
font_01_sfnt_off0000d122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD122 11636 bytes
SHA-256: 002fbfaf94c3351780ceecd7e07232820fbb7159d1ba1fafdaef03ddcde3ffe2
font_02_sfnt_off0000f7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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