Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde35b8a88ae1b14…

MALICIOUS

PDF

47.4 KB Created: 2020-10-25 13:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ea87b660fb1cb02d6f09a396fd201710 SHA-1: 81005726be883e7f28e90a374c77caa89eea8ab4 SHA-256: dde35b8a88ae1b14b14ea8b51d251f14ec25d6850cb9f23b0a458d57777b1136
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/aws?keyword=microplasticos+en+peces+pdf In PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/gasegajefiw_tazol.pdfIn PDF document text
    • https://disavapiviloma.weebly.com/uploads/1/3/4/3/134351159/dee7198da788.pdfIn PDF document text
    • https://pafudufuwod.weebly.com/uploads/1/3/4/3/134326080/likenaxide.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/sozafanimitu_lepebe.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/3740324.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/5290993.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/pulifid.pdfIn PDF document text
    • https://rigitugatelimo.weebly.com/uploads/1/3/4/1/134131632/duvipemopek.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007a0d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007a0d.bin)
    • https://s3.amazonaws.com/zuxadol/42347209728.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/87899857684.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/towasodagizale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecf23095-ee44-4645-998a-7738e96e97c6/bikabalifojunaxuvafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c25bbe9e-0750-4ac2-a33b-d6e33e59ea4a/22154943943.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/bank_of_baroda_education_loan_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/11457931234.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/reduturuwudakuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faba0214-a6ca-4065-9736-d783f76f2865/quand_s_veilleront_nos_coeurs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ff44cb-9992-40a6-8bb0-3c2b0dbff392/3902950554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2a28d3-918e-44ae-bbd5-2ec4cec24ace/19960809370.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 extracted file (font_00_sfnt_off00007a0d.bin)

Related samples 8

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_off00007a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 5156 bytes
SHA-256: f679a2b39844d6f7124f5872597a722e957b5ad297466be1b1378f172f35d254
font_01_sfnt_off00008b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9B 11412 bytes
SHA-256: 585f1c10cbfddec216cd060e798c99249b57490d69a180039551b2a4c6b8795f

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