Malicious PDF — malware analysis report

Static analysis result for SHA-256 6595772c4a780e17…

MALICIOUS

PDF

65.5 KB Created: 2021-03-22 10:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8e61a1df4890a7fd83ae921ead597207 SHA-1: 807b61a91f2cde46471fbb7515e968b1f33b62a6 SHA-256: 6595772c4a780e170b0669d9f551b125351b27c57480b962099d1add3f10b5a3
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded links, many pointing to disposable hosting or known malicious redirectors, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7991

Heuristics 5

  • 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.
  • 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/strik?utm_term=what+is+five+fold+ministry+of+the+church In PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/5272b4b5a.pdfIn PDF document text
    • http://nanamojuvimujo.medianewsonline.com/dujimazinawukugewoxozoge.pdfIn PDF document text
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/rabejulakored_muledebijunef.pdfIn PDF document text
    • https://gopopozemilin.weebly.com/uploads/1/3/0/8/130874381/sowufuselimemo_lokuzavizujekuj_najas_jopaxulid.pdfIn PDF document text
    • https://maposege.weebly.com/uploads/1/3/1/3/131378999/logumodavo_bokubo_gogakobi_kagod.pdfIn PDF document text
    • https://kiwosadil.weebly.com/uploads/1/3/5/3/135384828/muvixebojaraza-zipoxulu-zikatelufagusam.pdfIn PDF document text
    • https://tunajixawovu.weebly.com/uploads/1/3/0/8/130873758/0a80408474080a.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/2003969.pdfIn PDF document text
    • https://zuseluxutiv.weebly.com/uploads/1/3/4/6/134686448/jededakegugap.pdfIn PDF document text
    • https://pegavuvusejeda.weebly.com/uploads/1/3/1/4/131483027/vepufenen_zinawadeg.pdfIn PDF document text
    • http://mesutilixuta.sportsontheweb.net/bellini_intelli_kitchen_master_recipes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_68dc86d76ea749d9b1d496cdb5a7aa09.pdf?index=trueIn PDF document text
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_250defeff3494b31b53d45d2b0df5910.pdf?index=trueIn PDF document text
    • http://pexapoxulimexu.epizy.com/livre_guide_voyage_europe.pdfIn PDF document text
    • https://fefcf4f0-bf52-4086-adb3-b788df03f7bd.filesusr.com/ugd/da9d4c_f2e1deaf843c40209017f1ec3c3e4a4a.pdf?index=trueIn PDF document text
    • https://2b12d24f-0c9a-4a32-b427-430aba395f0c.filesusr.com/ugd/6cfe90_bcb21d50cd09410d9ac2a399d0cbc5f8.pdf?index=trueIn PDF document text
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_6b446ae6d1de46de89c9d55e649e31d0.pdf?index=trueIn PDF document text
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_eb8a7dc196234df79c1c4738780c929d.pdf?index=trueIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_18bbc119543b46c18a00252213057f60.pdf?index=trueIn PDF document text
    • http://bazepuguxadep.rf.gd/deriwatubavoreba.pdfIn PDF document text
    • http://tujolelulovowew.rf.gd/89222384805.pdfIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_0b42c216d1ba433b96d00d2fb0bcbe0e.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AA 5320 bytes
SHA-256: 7f15ec7e55021ec18b602be36f639afea9d628c5d8d2cb6abd52a53b51995a0d

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