Malicious PDF — malware analysis report

Static analysis result for SHA-256 26a24a1ed4dd3fca…

MALICIOUS

PDF

68.5 KB Created: 2020-11-20 07:07:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bad97fb70fb6b8589d0e485077a82e1f SHA-1: 1dec943d9d62fb852d24267906dc6413cfef179f SHA-256: 26a24a1ed4dd3fca515062acbef62bc5eefed6084b1c023602c87cc3224b015d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The presence of numerous external links, one of which points to known malicious infrastructure, strongly suggests an attempt to lure users to harmful sites. While no scripts were extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.

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
  • 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://traffine.ru/123?utm_term=katana+vs+longsword+fight In PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/dapix.pdfIn PDF document text
    • https://fujimerikav.weebly.com/uploads/1/3/4/3/134307110/wazalowo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458854/normal_5fa148e121058.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/4e8dd2d1-893d-465f-9ded-70339fbec674/83504583028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7538c254-badd-47aa-b6ef-8ee325c2b525/writing_equations_of_parallel_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/301a9cd4-2561-4751-9628-e800aff7feb8/veloroju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c4dcdeb-ab14-42ff-8b4b-e5d1bc9ad596/sefimovekokujosikulave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab726025-fba9-42e6-9d09-5ddf39ffc99f/turista_mundial_para_imprimir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffc67a9-9ad6-453e-8a07-457af93dc577/ruta_mas_corta_investigacion_de_oper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebc3da4c-2238-48b3-84b6-466b9613a7bb/hero_academia_dub_season_4.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/another_cinderella_story_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5277356-73ae-4a06-8a44-6b53e0ad3278/noler.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/total_wireless_promo_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6007703a-63bb-468a-bcf1-4a0b8d8a8500/zunirewa.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_off0000c619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC619 4960 bytes
SHA-256: 982211371e32b7ed11fcfe52eba4a22d1f430c245615dfa0a3863ddcfab918c2
font_01_sfnt_off0000d6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FE 9428 bytes
SHA-256: c87f5b70d07c63e2ee3c79395a322a8550607ef3d27bb2e8b8745f8541dc3107
font_02_sfnt_off0000f737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF737 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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