Malicious PDF — malware analysis report

Static analysis result for SHA-256 a720c885d917f363…

MALICIOUS

PDF

82.2 KB Created: 2021-02-17 19:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6d8ce8d29ca637895a28165ed67f1c29 SHA-1: 1d0eedaff5f24145f02b17715d5a28fcbfebecb3 SHA-256: a720c885d917f36320e16b1abdb6ccaa8f5124ba03c9e9ca0538f045a4be7dd4
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=taco%20bell%20soft%20taco%20supreme%20sodium%20content In PDF document text
    • https://zeteleginogegop.weebly.com/uploads/1/3/4/5/134526156/127475.pdfIn PDF document text
    • https://nobaloledajasom.weebly.com/uploads/1/3/2/6/132681012/papiwupizifo.pdfIn PDF document text
    • http://mikrotikwizard.com/ridokijolefijejotesorevawwgt4n.pdfIn PDF document text
    • http://markettop.pro/18064844963w5h9.pdfIn PDF document text
    • https://biwizodem.weebly.com/uploads/1/3/4/6/134650183/2820331.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/nogexo-refelavewaxolu-fowojobiludimix.pdfIn PDF document text
    • https://jevavuxenexek.weebly.com/uploads/1/3/5/3/135351486/mojumefuk.pdfIn PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/susibazitujav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378856/normal_5fca6755ab0d8.pdfIn PDF document text
    • http://uscreditreport.info/video_star_for_androidi8hc8.pdfIn PDF document text
    • http://espaceabone.com/equaes_literais_exercicios_8o_ano5fu5t.pdfIn PDF document text
    • https://latowinu.weebly.com/uploads/1/3/4/5/134508675/tonozam.pdfIn PDF document text
    • http://my-credit.info/vixeridilubavosabafolimuvivalu.pdfIn PDF document text
    • https://xinotetul.weebly.com/uploads/1/3/5/3/135351743/dotagokatale-xiwigamop-gagadejozox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412568/normal_5fed643d4652d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000101a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A6 5392 bytes
SHA-256: 51bb2213e2a758de8fa88cfa498ef7e6e3591e9ea84aa85ded05147e9ede1092
font_01_sfnt_off000113d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D7 12028 bytes
SHA-256: c74241df15eb81c6ba8efe8b575e09a706eafb23089078ecc485449ab2574b57

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