Malicious PDF — malware analysis report

Static analysis result for SHA-256 59578d369c406334…

MALICIOUS

PDF

100.9 KB Created: 2021-04-09 10:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 079442e3bfdc81b3379cc216f2f909ed SHA-1: 9aaa8ad12c811804bdf12790992030d74bfd8f1b SHA-256: 59578d369c4063344bc724ed23a8106c2e8f2ea05cfe4f920e028b861783742f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://leonvi.ru/strik?utm_term=samsung+bd-p1600+remote+control PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458148/normal_5fff0dbf939ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fcc8cb2243c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366348/normal_5ff341d5b0ee6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pujelezefij.epizy.com/36937892694.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/hearts_card_game_softonic.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/aha_guidelines_2015_tachycardia.pdfIn PDF document text
    • http://vuremekewema.rf.gd/html5_canvas_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8151e29-b5b8-4114-a626-b18ac52cca38/zonazojaf.pdfIn PDF document text
    • http://ramamezez.rf.gd/83411049047.pdfIn PDF document text
    • https://6674166f-eb58-46b1-9d38-a528bc95e02c.filesusr.com/ugd/e38d8e_44e8d04f2131431abcd1393dde842eed.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xisefowu/will_there_be_another_scary_stories_to_tell_in_the_dark_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/born_to_endless_night.pdfIn PDF document text
    • http://bafovupopevepus.epizy.com/admiral_washer_agitator_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/pofekiriz.pdfIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_3f43f97cda6c47938dd3413952ac61cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/amazon_prime_wheel_of_time_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/xagixozap.pdfIn PDF document text
    • https://de74b992-0de1-402f-a2cc-438209b178b2.filesusr.com/ugd/2693ef_eaa1dccccf2d46678a057806d3f4af3f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/159132ad-007a-412d-9554-0c10bdaaed74/19057631102.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/21461373673.pdfIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_9ea0ce1c00f048e0b570cc6f1d24139b.pdf?index=trueIn PDF document text
    • https://be9c8297-50e9-4ec8-be22-7cc4068ef96a.filesusr.com/ugd/fc3b0b_e650801f6e7b494cb832666caf73244e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tapexiw/94860363770.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000131d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D6 6016 bytes
SHA-256: 266e8730f559d2efbd05014f5043eedf00cc0b958185299ef7e78a0bc48c70a5
font_01_sfnt_off0001463a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1463A 12536 bytes
SHA-256: d8005929aa94b0e8f4dfbf9a922fc8c40f781035f3f7fcc1c1a4c75b1bb21c61
font_02_sfnt_off000170f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170F3 16144 bytes
SHA-256: 2a0e0db2741371e9ed62770e079d1c3af4c642b15c78536d4995ddcc38d58e08

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