Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a034ef1c78ebad8…

MALICIOUS

PDF

67.4 KB Created: 2020-12-22 21:16:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: de488977624e2b0fca863bbf4a0b101b SHA-1: d52301c2f0282987b1724144a38e3ef2b18b94fb SHA-256: 1a034ef1c78ebad83540e1d07d81be5e192975cccbceb12b499daf145fac2c4d
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://traffnew.ru/strik?utm_term=us+radio+station+call+letters PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5f9ce601ae55a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492294/normal_5fd198c040edf.pdfIn PDF document text
    • https://buwavazazaradig.weebly.com/uploads/1/3/3/9/133999961/pijepobubako_jebisojexotivo_lugure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f86fa70cac32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422877/normal_5fcf42f3b6fc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_5fae4fc6b8ab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472486/normal_5fad6a20dadb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebisop/million_dollar_baby_imdb_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75f702e0-609f-4b52-9048-799482b1c9a1/leupold_deltapoint_pro_7.5_moa_review.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/ali_kiba_kadogo_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/feduzoxazeruvivigivixogeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de8b0711-8c1a-43e0-b609-6b486367f300/lirinavumegowodajun.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_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 4924 bytes
SHA-256: 1e58270393f2b2d771cb8d09dafce75ae8c568c865ed36b403d9b03fe503cc7e
font_01_sfnt_off0000ddd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD4 10316 bytes
SHA-256: 70209e5197f21fd864b462925ffa74f76eb9fee271e97e4d5db701a6db9ed834

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