Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c580e842296d4b…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 06:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 56fb489c039c05858c81a412c86f0a0e SHA-1: 7415a908877a1cef61aba418094acf5ba26a453f SHA-256: 15c580e842296d4b33cbdb5784d11d334047399e6bf3c3543e3e66c6ce274e99
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://crophysi.ru/strik?utm_term=what+toner+does+the+hp+laserjet+pro+400+use In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422133/normal_603718d1321f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476432/normal_60290ce072b98.pdfIn PDF document text
    • https://witowufagefalob.weebly.com/uploads/1/3/0/7/130738848/jipokogudamog.pdfIn PDF document text
    • https://muwegejise.weebly.com/uploads/1/3/4/2/134265646/wuzogetuze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fd666730e67a.pdfIn PDF document text
    • https://rogubadivuna.weebly.com/uploads/1/3/4/3/134337887/kosonipebokaw.pdfIn PDF document text
    • https://cdn.sqhk.co/wujozuzewed/4hiCOhe/symantec_vip_access_transfer_to_new_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/gjgcBJC/create_a_list_in_excel_from_data.pdfIn PDF document text
    • https://puzejiwitamino.weebly.com/uploads/1/3/1/4/131453698/5cd5d9d6b695437.pdfIn PDF document text
    • https://porovepo.weebly.com/uploads/1/3/4/5/134527374/pijov.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/hPCmqc9/gorebimavapux.pdfIn PDF document text
    • https://zubotovilep.weebly.com/uploads/1/3/4/5/134581484/7585784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458137/normal_601e7df478da2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414341/normal_602353c62f34e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/davawina/59031738335.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 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_off0000e09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09F 5368 bytes
SHA-256: caead531c4627244ce5c3f92e5a45b99b475089209b715e488dec9e1286b268f
font_01_sfnt_off0000f2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F0 10564 bytes
SHA-256: 601d08889213b180e1536b7137c120be44ea7d278c894e3d1763087e3335cea3

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