Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73e1f2810d27097…

MALICIOUS

PDF

61.2 KB Created: 2020-12-14 00:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: df7712878d1bdfb18d5af2dc9bce91c1 SHA-1: f6ed46839ef2ee99063cc7d39fe85360a985628d SHA-256: c73e1f2810d270976c4783e5162d6e5f9ad8f7768b140c273080eccb84f05c5a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, with a critical heuristic identifying it as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the nature of the PDF and its numerous external links suggest it is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/123?utm_term=west+ridge+church+elgin+il PDF link annotation
    • https://jasixuruvixu.weebly.com/uploads/1/3/4/2/134234618/783e4c.pdfIn PDF document text
    • https://mominebokax.weebly.com/uploads/1/3/4/8/134899741/nobivosas-vefakitepupuz.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/275046.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/lobuluwesuvikekojixa.pdfIn PDF document text
    • https://jujapuboma.weebly.com/uploads/1/3/4/6/134688254/364ef9.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/e2f1aedfe9cc.pdfIn PDF document text
    • https://tijisuxijofijo.weebly.com/uploads/1/3/4/3/134374136/joboguropubu-gujugetato-sexosowokipizo-bivewo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f922b62cf4cd.pdfIn PDF document text
    • https://xarupome.weebly.com/uploads/1/3/4/4/134469096/5ee48413fa.pdfIn PDF document text
    • https://majemuxisirilud.weebly.com/uploads/1/3/4/7/134719568/pugukanolekewaso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe5b842dd96f5918bd6ca8/1606310790233/acc_baseball_standings_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc529855e8e827d42a99b3c/t/5fc99490fedaa13a485b8f28/1607046289402/cops_vs_robbers_car_games.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdff28e18c5c478ec204fd/1606287144891/wafirufufovepifeja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc527a3c6229360ecc88336/t/5fcbbd0c8dcc5603befb9064/1607187727421/mutant_world_minecraft_map_download.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_off0000b2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B1 5004 bytes
SHA-256: 598a7592946016d14b07f24fbc58712a5c829b9f3039a06dd1501717f8c3689c
font_01_sfnt_off0000c3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C0 10784 bytes
SHA-256: a947b73f2154e5f7f1add9dec829aabecdbe840bd57fd3ddb951db27335a1794

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