Malicious PDF — malware analysis report

Static analysis result for SHA-256 2289d9bf9eb3aa6e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-30 18:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0be7bc04e56b84cf64a21778ee11b5f5 SHA-1: 958809df4a165cfe48a578cdc65034d63c85d311 SHA-256: 2289d9bf9eb3aa6ed9260d7e26e4ff8289d37bc26ac06a0273c263fb661103e0
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or direct users to malicious content. One of the primary external URIs, 'https://pelibifir.ru/123?utm_term=jean+bergeret+pdf', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://pelibifir.ru/123?utm_term=jean+bergeret+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369912/normal_60127f38dff5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483610/normal_5fd28a71791bb.pdfIn PDF document text
    • http://kabonuwumew.66ghz.com/rofoxizolosisokojogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5fe6876d61da8.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/vavapekadoliti/insanity_flyff_levelling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/80756358334.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/73131371283.pdfIn PDF document text
    • https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_10540527f7444aa79006ee29208f051c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/44651194474.pdfIn PDF document text
    • http://jolavewavesuj.epizy.com/7428968529.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad38f2d5-2347-4e7f-89ba-605181cf7124/minuta_de_reunion_que_significa.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/cash_flow_analysis_form_1084.pdfIn PDF document text
    • https://58960a86-a3f4-42d8-866e-ee2cf32068b1.filesusr.com/ugd/1ad962_b8b060e4be094c50a063f9b2a55b9f1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a99b17ab-580f-4e36-ad85-dbeb2381708d/serato_dj_pro_download_free_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/rijugomagipi.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/61116846666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b5d5991-1174-4847-a5c9-3abd320def45/pifulawewizenomavekila.pdfIn PDF document text
    • http://kaxozofevaz.epizy.com/gubotumiko.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/7072950563.pdfIn PDF document text
    • https://a72a44ae-2aae-4d6a-a6c4-235301d0a62e.filesusr.com/ugd/57436b_07a2f63e75bc4650a3af6cccff2b1ebd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vigevot/gimivituvav.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_off0000e989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE989 5128 bytes
SHA-256: 0df87b84d5e9fb54a8c10b8150d00f5109d1a9b549fb9561d49b2716d09cef45
font_01_sfnt_off0000fb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB09 13896 bytes
SHA-256: 3c5d718b681992c82a778f303b349c31f52e2781aede3b73de17251f1d08adb1

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