Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ffa5de4c14b8aa7…

MALICIOUS

PDF

76.0 KB Created: 2020-12-28 08:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 9ebb1e031f2021616f7f0f53b9e03277 SHA-1: 15f52f84aba7b2afa9e79eca4a797331cd451441 SHA-256: 4ffa5de4c14b8aa7fb14129a7dfff90c8cce8024f7076445c61fa9b7d5aebae4
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which are likely part of a link farm designed to improve search engine rankings for malicious sites. The document body contains urgency language, suggesting a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=puppet+time+theatre PDF link annotation
    • https://legufita.weebly.com/uploads/1/3/4/8/134866723/gibaviwuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5f9c56674a03c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413370/normal_5fd3dc0b03935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380068/normal_5f9978d398b44.pdfIn PDF document text
    • https://tidixusega.weebly.com/uploads/1/3/1/3/131380021/vamugusaviko.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/zilazeredo_rumubem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5f94f7425d2e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375199/normal_5fa16e928c876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_5fd247e91fc64.pdfIn PDF document text
    • https://bubosetew.weebly.com/uploads/1/3/4/5/134515161/bolajevosajuxumes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465394/normal_5fc22dbfd8dad.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/bulolimepol/37795786828.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/wondershare_filmora_8._5.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_off0000e1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E2 4516 bytes
SHA-256: 072cfb3199044977c86262a3467cab9ca0926551c6c21c0e1a74683dc36c2d4e
font_01_sfnt_off0000f12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12A 10644 bytes
SHA-256: b9bfb4afa841f03acc57ef0dd0ac38f1a3cb90db648ab14010a71be873e9e9bc
font_02_sfnt_off0001158f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158F 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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