Malicious PDF — malware analysis report

Static analysis result for SHA-256 21d2940d05abac09…

MALICIOUS

PDF

73.2 KB Created: 2021-02-17 16:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: dd996329745a9a61fdb4bc713c6c9d68 SHA-1: 2656f6fefb699440cefb399e21f1e320428155e9 SHA-256: 21d2940d05abac096bddfdb079c6f716924e2802656818569049e41030e9950b
186 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
  • 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.
  • 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/wix?keyword=arizona+driver%2527s+manual+pdf PDF link annotation
    • https://telemoradez.weebly.com/uploads/1/3/1/0/131069753/6220924.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5fffe8929beb3.pdfIn PDF document text
    • https://renezotutumiw.weebly.com/uploads/1/3/5/3/135343322/100833.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496193/normal_5fe22b756aae6.pdfIn PDF document text
    • https://kovufevenisote.weebly.com/uploads/1/3/5/9/135981247/sodoxanej.pdfIn PDF document text
    • http://zorovot.22web.org/freeman_hydrating_sheet_mask_review.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/vemuribezimu.pdfIn PDF document text
    • http://towajemikof.iblogger.org/65739597768.pdfIn PDF document text
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/2322166.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://viladanus.epizy.com/videoder_app_for_windows_7_ultimate.pdfIn PDF document text
    • http://zogaxemajov.epizy.com/720340157.pdfIn PDF document text
    • http://zuniguvip.epizy.com/dell_p2418d_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/badinerie_piccolo_trumpet.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_off0000e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE285 5320 bytes
SHA-256: 6cd110a523f61ce268b4f525f345351668440909f180a0f6d0d2eeba20c04766
font_01_sfnt_off0000f49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49D 10380 bytes
SHA-256: 3c06d5394036c66f84ee5cbf96309d67350b7c7fff5e1a16a755321930aafefc