Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9193c8077f1a0e0…

MALICIOUS

PDF

64.7 KB Created: 2020-12-11 20:27:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f69a1fb11290ef834e8bd09a096af657 SHA-1: b8a0706e56d30c739fc581a8ffba141e3e46e684 SHA-256: f9193c8077f1a0e051a7d7458d6a1701fe74200cac94820a12ae1a67111c6a7a
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The presence of a link farm suggests an attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?utm_term=how+to+reset+2xx+plantronics+bluetooth In PDF document text
    • https://sidutoxa.weebly.com/uploads/1/3/4/8/134886075/fde51a17ef0f.pdfIn PDF document text
    • https://lemitixodage.weebly.com/uploads/1/3/4/8/134868200/jidasiloguzokis.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/jizilewoxonekoruwa.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/0d46a588-3eac-4f72-ac47-929f88f18091/mopom.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/aov_test_server_china.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802da465-55b8-425f-bce7-decedc314d43/nvidia_shield_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/counterfactual_history_a_user_s_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4cb84f-6233-4754-a130-635547f4dda9/7063997386.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/57864468541.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/sketchup_software_free_download_with_crack.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 1

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_off0000c05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05B 5412 bytes
SHA-256: 75194494900e8357de0d917ddd09e00c5b637b9a0301c13ab93587122139dc11
font_01_sfnt_off0000d2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CB 10288 bytes
SHA-256: 00276db646b5fcc2d12ecef65b20b36db0451d3895e4bad713820c7796a68ab3

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