Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bdb63cc47b9708…

MALICIOUS

PDF

89.4 KB Created: 2020-12-26 00:33:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a7884eafa2a912bf9f7c5cb978f75647 SHA-1: ecbab289c3577f5da22247d77972781a03d724ff SHA-256: f6bdb63cc47b970856e3f325e3e0a46f8e8a51da3e9cbd1b4a71664fbe00392e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous external links, with one pointing to 'traffking.ru', suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate an effort to direct users to potentially harmful external content.

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://traffking.ru/strik?utm_term=fastmed+urgent+care+greensboro PDF link annotation
    • https://poxotedodesogin.weebly.com/uploads/1/3/4/3/134305686/fa0dcd928ac3274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403120/normal_5fe30511958e2.pdfIn PDF document text
    • https://nalufubuxozukex.weebly.com/uploads/1/3/4/4/134479837/lutijuvikox.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/c7c46037-09aa-4b82-9450-d2cf32402424/37044943392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee42f8c6-6b4f-4ebb-9f54-e5f40243eb11/2858867962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ebb17c-f4be-4537-b1c4-422b8107b043/faguwagasipowix.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/pc_power_supply_wattage_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/490c3b22-6951-4257-b19c-5575fed3271b/82466928796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33d44f61-25cd-491f-8626-255d9acc78be/talk_2_premium_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67ba3889-93ce-4369-bc94-e6a41e093a55/bowmasters_all_upgraded_characters_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b3f656-854e-4bd9-a708-d841abe70ce0/7689739732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1523a6a7-6e18-49f7-a783-201780de9895/88165300150.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/6096669891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5adfef0a-61d9-46c0-9cac-2bd13ad9c426/45513832075.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7A 5324 bytes
SHA-256: 488e6422e8282050f24f0794c263ac48c9c5574f5c9711640b20d2245044308b
font_01_sfnt_off0001317a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317A 11608 bytes
SHA-256: 5ad9c046fec2cac209b5036993109107a5df2dcd34de5c03978e85a53f5599cf

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