Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0fb7cb3f69d1a1…

MALICIOUS

PDF

85.2 KB Created: 2021-03-13 23:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ca0c11728ddfd2dbd6ec40dc5acb88b5 SHA-1: 338827d2a49c5eef9b25ac4dd8d4b8fad21b4dab SHA-256: 1e0fb7cb3f69d1a186017f69275a5ace1d981fc7159e8337a7f20730a20757f1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/wix?keyword=mcdougal+littell+algebra+2+and+trigonometry+answers PDF link annotation
    • http://mutujejeturuduf.medianewsonline.com/civil_engineering_firms_in_atlanta_ga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402267/normal_5ffdaa50a3ad8.pdfIn PDF document text
    • http://gukivuzijisuva.getenjoyment.net/the_science_of_accelerated_learning_download.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/meriv.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/banting_red_list_foods.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_6014961ed01f3.pdfIn PDF document text
    • https://taleputara.weebly.com/uploads/1/3/4/3/134305900/3597710.pdfIn PDF document text
    • https://roparinupiw.weebly.com/uploads/1/3/5/3/135392621/4098988.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ec5c17a1-061e-4a2c-a9e6-b3561ba71229.filesusr.com/ugd/299074_08fdc44d79fe48108c7a68563c4f1158.pdf?index=trueIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_8030c7e2516044169298a8ad33e2edfb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84978922-d811-4b9c-b0d0-327d074ab6be/sanoduwuniwulavuna.pdfIn PDF document text
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_b67179a0cc4d465baa0840265acf5160.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c02f0ad-f081-4026-80ba-e83b6d17a20d/putigaregufenozekuwelub.pdfIn PDF document text
    • http://pakapenabu.atwebpages.com/cannibals_and_kings_marvin_harris.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/synonyms_worksheet_for_grade_3.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_off00010df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF7 5732 bytes
SHA-256: 28e05e12063444f82024405c1e24b28a18caa0aaff080f840a99009e17de6c77
font_01_sfnt_off00012185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12185 11152 bytes
SHA-256: 2820c3d1376a6f8ffc0550f42499ff59fad39354dda2627f54a8176d0da3b9f1

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