Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebebb3489ef650c…

MALICIOUS

PDF

69.5 KB Created: 2021-01-02 18:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 32ac04d9fca6db4c02c18df2325e4192 SHA-1: 74b94412d8d752ab3b3296839163d871f7bd6580 SHA-256: 8ebebb3489ef650cd2c9b39d638ae713ee851322d6fa37db29c1c509703a116d
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. One of the primary URLs, 'https://trafficel.ru/123?utm_term=new+balance+624v2', appears to be part of a malicious campaign. While no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect users to potentially malicious content, aligning with phishing or SEO spam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=new+balance+624v2 PDF link annotation
    • https://raxorevowipafe.weebly.com/uploads/1/3/4/7/134765671/8e484a45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_5fb891f516a3a.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/rexevikekokid-lekezemil-wapopozeduj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495262/normal_5ff0161bb7279.pdfIn PDF document text
    • https://bunewifuji.weebly.com/uploads/1/3/4/7/134709558/2809418.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/5d626607-1ffc-4a77-8e73-7bacd5750510/merrillville_tea_room_menu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c07a49-1f63-44b5-b9d5-33cdc50ded5e/66576758724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597fc8eb-c979-4e1c-b128-61982740f8a5/thich_nhat_hanh_walking_meditation_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef7f749-b6d2-4780-bccc-4025c19d536f/2019_tesla_model_s_standard_range_auto_awd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60a8c425-f0c2-4411-83bb-66a70935b3b9/94933155197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82a52adf-6774-4b23-ab6d-940c67e0882b/xowafunotewesakolixeki.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/61911636941.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_off0000c644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC644 4704 bytes
SHA-256: 6b6aed5e3b1bfa46fb9360f1222fc210b8f6ffb67b2843ff5f9b99db48c46f9b
font_01_sfnt_off0000d665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD665 10824 bytes
SHA-256: 07bf08e6791e927fe0c08d513f7964f13bd8aea2139a432dc3c6d7114e2a5dbc
font_02_sfnt_off0000fb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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