Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87475c3c921a075…

MALICIOUS

PDF

74.1 KB Created: 2020-12-23 06:53:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b0eb4a29f59abeb9859ad12a7a2b8895 SHA-1: 2d8d73b0f71637c3a118f75ba4d554960aa76570 SHA-256: f87475c3c921a075847270ce3dd86a010f8660cd4a068b3a03080bd12c5c8c55
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO manipulation tactic. One prominent URL, 'https://trafftec.ru/strik?utm_term=water+parks+in+florida+open+in+december', is directly embedded and likely serves as the primary lure. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing.

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://trafftec.ru/strik?utm_term=water+parks+in+florida+open+in+december PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467278/normal_5fc679b405401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_5f9a1667541b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_5faa695fcb9f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406789/normal_5fdf8eea01628.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/jawemepuwiwifisuluf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_5fdc6d61cdb73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402706/normal_5fe164d3f34bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479932/normal_5fd7e03b56ffe.pdfIn PDF document text
    • https://farisogu.weebly.com/uploads/1/3/4/3/134307724/xesono-dimekesiza-kurokoganomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f91044bd67ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f11f7b2-5dad-498e-8c99-c9a3c8a0d320/55598446773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f22c42e-0ece-42f1-904e-392e4ea339a5/zefevoturopoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/277d6ec2-455d-4888-97b5-c018047ec0d8/gobavobojafonepigubolan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9ed172b-0cdf-44a0-bca3-69e64e029dca/rwby_roman_survives_fanfiction.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/get_to_work_on_time_app_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cbd8a2a-3ab8-4eb5-ba39-003e3e347f8a/leseporilu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 5516 bytes
SHA-256: 5bb31f57fee6ecf6debedfb44356223578120d100df8bafb1416dc2f9f5711b0
font_01_sfnt_off0000f4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 11352 bytes
SHA-256: 7624ea7cd07f4a11030d372131b8907fa383a91289e247bb862060105e50be76

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