Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde2261b84f06b78…

MALICIOUS

PDF

86.3 KB Created: 2021-06-05 09:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 53c12915771e83c87a8f03bd77743e4e SHA-1: 92aac6988e1013f2cc80915a8e3f27114e0fbfbf SHA-256: fde2261b84f06b78bf9a3886d1ee4562f9e57b5014d772275a47c87a8f9360ab
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. ClamAV and ML classifiers strongly indicate malicious content, specifically identified as a phishing trojan. The embedded URL suggests a redirection to a potentially malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://wastran.ru/pbw?utm_term=write+linear+equations+tables+and+word+problems+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408987/normal_6023e55f4674f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387918/normal_60243e5bd1da2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_60097b86a0128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414495/normal_60351d6c80bf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475397/normal_6024acf316197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500887/normal_606e16ca42026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_601d5c6a82aff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_604b6585ac17d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464525/normal_600bf19782955.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489057/normal_5fef7cfb0a868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412773/normal_604b0a09dd5a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469378/normal_60583e77c681a.pdfIn PDF document text
    • https://judemozosuduj.weebly.com/uploads/1/3/4/3/134306717/wesok_gasigipekelo_jatolo_dagatak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486061/normal_6020839f9f06e.pdfIn PDF document text
    • https://bigevuma.weebly.com/uploads/1/3/4/8/134899145/duvoximojitu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460045/normal_5fc64158c0280.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_5ffd0e96d2169.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445573/normal_6000eee6b3e08.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/b69a5c41-70da-4c9e-840b-71fc0be2526f/gebebafat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bba95e4-cdb6-4d0a-8b43-5be28bc36534/hodinky_casio_gst-b200-1aer_g-shock_tough_solar_bluetooth.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 5516 bytes
SHA-256: 6d1043a97010b41c1cd4d3fd101651d0c08ac3cfcec73e3848f09f91ec043b78
font_01_sfnt_off00010059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10059 11384 bytes
SHA-256: 6da7629095d844b4e7b59e5985e3f8abbecb90028363c7427e64e00d8a540abd
font_02_sfnt_off00012796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12796 16096 bytes
SHA-256: 3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca
font_03_sfnt_off00013c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C60 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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