Malicious PDF — malware analysis report

Static analysis result for SHA-256 13e2965069029af1…

MALICIOUS

PDF

137.0 KB Created: 2021-02-22 08:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 945d62e18b971d93c27ca34e2e3174b7 SHA-1: aaa8f2c95994d357c329ce779bec7b1201c2fd94 SHA-256: 13e2965069029af16d067de9a48ff137c72269be618b7ed4d32a5a10288694f5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs pointing to disposable domains, a characteristic of link farms used for phishing or distributing further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/123?utm_term=forma+de+comunicacion+ciudades+actuales PDF link annotation
    • https://mumilupoj.weebly.com/uploads/1/3/5/3/135351188/91fea7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388598/normal_5fe25ea350b78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417030/normal_6003e6ee2f0e2.pdfIn PDF document text
    • http://zadonito.iblogger.org/burger_king_breakfast_menu_ingredients.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/OEagf9L/65914519168.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/jLmieAk/58769488570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_5fd34ccd2876b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368970/normal_5fe3acbae922f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_6015b42f7e21e.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/g9MXVxC/nurugoravedo.pdfIn PDF document text
    • https://wawodedirikib.weebly.com/uploads/1/3/5/3/135348651/dabixibuv-loxal-xakinezo.pdfIn PDF document text
    • http://felebom.iblogger.org/how_do_i_take_a_screenshot_of_a_specific_area_in_windows_10.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wavedada.epizy.com/ginutegekaw.pdfIn PDF document text
    • http://wavujeg.epizy.com/harry_potter_2020_film_trailer_ita.pdfIn PDF document text
    • http://kifavudufolafu.epizy.com/16497227441.pdfIn PDF document text
    • http://putesedesupelo.epizy.com/esr_tb_report.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_off0001dc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC95 5040 bytes
SHA-256: 144d7fc36f2db1b5ce51050054555c51b82cfdc2347d3ec1b86b65eb986f7a0c
font_01_sfnt_off0001ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED9E 12128 bytes
SHA-256: cff9707899d883fef40ee6ad46b13b7a87be6d05706f057a873085c9c0bcf6c7

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