Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fab80b06a4191fb…

MALICIOUS

PDF

77.7 KB Created: 2021-04-29 20:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0cc14971bd2921d2028d7aaf2cc70101 SHA-1: cd085a9184c9393ff0373ff4714c6a8cc5c9b040 SHA-256: 7fab80b06a4191fb1fd9067472e0169a8ecc9fde5036b2351ba624a99b2cd809
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, which is a common tactic for phishing or redirecting users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to drive traffic to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=que+tipos+de+medios+de+comunicaci%25C3%25B3n+hay+en+la+actualidad
    • https://cdn-cms.f-static.net/uploads/4497346/normal_600d6dc1b9705.pdf
    • https://cdn-cms.f-static.net/uploads/4494681/normal_603629b77e52f.pdf
    • https://static.s123-cdn-static.com/uploads/4384650/normal_5fdfb8b39d79a.pdf
    • https://giruwaferelesed.weebly.com/uploads/1/3/4/8/134850821/7399010.pdf
    • http://mklhhhh.space/10314117385o18u4.pdf
    • https://sobemifukoku.weebly.com/uploads/1/3/4/8/134887972/sowif-gusowuz-ririxitiwevijo-kasijedufu.pdf
    • https://cdn-cms.f-static.net/uploads/4447096/normal_604132a88db21.pdf
    • https://semoburepov.weebly.com/uploads/1/3/2/8/132815840/9276884.pdf
    • https://cdn-cms.f-static.net/uploads/4499317/normal_605688634e150.pdf
    • http://hardcreditcheck.info/how_to_program_chamberlain_liftmaster_garage_door_opener_remotefn2uk.pdf
    • https://malibuvebejonab.weebly.com/uploads/1/3/4/5/134524684/xelebira-pezewurixoriwix.pdf
    • https://xenosolenofudel.weebly.com/uploads/1/3/5/9/135990942/e6f3208c9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vizegemawokaxe/benuga.pdf
    • https://s3.amazonaws.com/sebunuzu/padebe.pdf
    • https://s3.amazonaws.com/povelenavuviw/caller_location_tracker_app_free.pdf
    • http://bapexuzajo.epizy.com/how_to_ace_the_physician_assistant_school_interview_ebook.pdf
    • https://s3.amazonaws.com/xomepixo/nusoregonalupunogevixejul.pdf
    • https://s3.amazonaws.com/jovekus/jamovefu.pdf
    • https://s3.amazonaws.com/tafogusegabomu/70619085408.pdf
    • http://zapidijerazavot.epizy.com/cardiac_arrest_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f41b.bin
913a9ea28c6d75cfc19ca2c8c5925207da96407088b83d0c50749e5211e4ac5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41B 5516 bytes
font_01_sfnt_off0001067b.bin
75dc11d4f22c64a9ac1acea99dc9e68e29d01eb575707e204459e3f28ca45d5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1067B 9840 bytes

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