Malicious PDF — malware analysis report

Static analysis result for SHA-256 88142315366d74bd…

MALICIOUS

PDF

69.9 KB Created: 2021-02-14 12:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2fd023f8bb5e24e1fac1385d27c69201 SHA-1: e614fd9f56eb7c28e6c4e129b9491dd0701cbec3 SHA-256: 88142315366d74bd9b816f92d0c4f5df41d2500373da0f2d32317ad54523f1ad
184 Risk Score

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 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.
  • 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://yafferge.ru/aws?utm_term=angular+8+template+reference+variable In PDF document text
    • http://tryadasert.online/tijogon50tn.pdfIn PDF document text
    • https://butadagawonor.weebly.com/uploads/1/3/1/0/131070306/vizibasito-toguruluzimimup-purufopo.pdfIn PDF document text
    • http://metazoaapc.fun/linoxataleguq9p.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/tovisuvab7g333.pdfIn PDF document text
    • http://kidepokapila.22web.org/38491115262.pdfIn PDF document text
    • https://wijugiretatito.weebly.com/uploads/1/3/2/8/132814958/7749175.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/transformation_of_quadratic_functionwd56z.pdfIn PDF document text
    • http://winclean-shop.space/a_midsummer_nights_dream_original_textn76kx.pdfIn PDF document text
    • http://mesretly.xyz/810294220s1i9x.pdfIn PDF document text
    • https://mutalexo.weebly.com/uploads/1/3/1/8/131871787/8970315.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jogulele.epizy.com/pilamodap.pdfIn PDF document text
    • http://tetozidix.rf.gd/tajusurajusatetexubojuxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/ceramics_properties_and_applications.pdfIn PDF document text
    • http://vivazuriperulus.epizy.com/casio_g_shock_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/sinusitis_tratamiento_pediatria.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_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 5540 bytes
SHA-256: 93292181fed4a054e11c92e9b40caf18d1236348f3e92cb5f6270d16af2f030a
font_01_sfnt_off0000e3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B3 11448 bytes
SHA-256: 71c10b195c4f82e0755f65ab9ff1b9b1dc487d7e851eb02efa1a91a64b909022