Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9d6be427d52fb2…

MALICIOUS

PDF

97.6 KB Created: 2020-11-17 05:07:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d735d717c0f01c381d3dd63016b57df0 SHA-1: 48167bbfefec2e2eea91c84bb489558ad4aecef3 SHA-256: 6d9d6be427d52fb28fa48998c6cda108f462a690b99c20ea91f753af6ff12b03
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing trojan. It contains a large number of external links, many pointing to Weebly-hosted PDF files, suggesting a link farm or SEO abuse tactic. The embedded URLs likely serve as entry points for further malicious activity or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=returning+weapon+pathfinder+2e PDF link annotation
    • https://bizekexejanagiv.weebly.com/uploads/1/3/4/5/134593847/rakezumiwekojabin.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://pepusaneped.weebly.com/uploads/1/3/4/5/134503703/begixizigijewi_tiverol_ditosu.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/difusalabefe-kisoget.pdfIn PDF document text
    • https://nunigatomupava.weebly.com/uploads/1/3/4/3/134314222/6117870.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/3e461ccc-41ce-41f1-b710-ce0cd814c716/37950504660.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/77520621733.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/final_year_projects_for_electronics_engineering_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0274e69d-1b73-4582-8639-84d5102d3646/10487272701.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/ahmedabad_city.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_off00013364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13364 5208 bytes
SHA-256: f3b9b5a13d4764aa5f55bd4ee6a0ec8c0a96e382f923b22ab0733300e55d4a62
font_01_sfnt_off00014528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14528 11172 bytes
SHA-256: 58f6d94976a27bc8f923045549869bc254a9766b61638efec9bd474cf71d3f4e
font_02_sfnt_off00016b39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B39 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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