Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c2bab23491f424…

MALICIOUS

PDF

78.9 KB Created: 2021-03-07 21:01:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b146b135866b952be768a97657c8e80d SHA-1: 17e8e60bf0dbe2d489509a987479d86cd9d24412 SHA-256: b2c2bab23491f424ac25c501621bd5504d69ce735405495b634c2ec5c7c45117
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 0.9998

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://xezojetit.ru/strik?utm_term=how+to+reduce+pimple+marks+at+home PDF link annotation
    • http://vittorguxx.site/how_to_clean_a_sunbeam_heated_blanketcrxmb.pdfIn PDF document text
    • http://zesamoa.online/angeles_y_demonios_libro8agbx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_5632d0ada95d459983e5dfb1a0221a25.pdf?index=trueIn PDF document text
    • https://bef89f6e-6323-4b84-ad9d-a44490bfcc4f.filesusr.com/ugd/96768c_79270ee237534a5db2bede875b0321e2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/figugipopar/zafaxoduw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffeba75-abf0-4816-a317-25b5a3882e05/how_to_find_pascal_triangle_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/napebotofep.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/ranufijemukez.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/form_1_mathematics_questions_and_answers_malaysia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6536fa3b-7b23-4de0-ad07-bff96b41a62a/vitamix_immersion_blender_sale.pdfIn PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_79bec7ed0a784872b246f46830b3cd27.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_97b5258e05124afca182eb6a6e4b5294.pdf?index=trueIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_c28a887ce26b48e2a08d833b7d8795cf.pdf?index=trueIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_c65f6834c4a94c06b213144cc378b727.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f977acaf-4f93-4bc3-9afe-1012bdb4427b/48202592036.pdfIn PDF document text
    • https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_1e660c6eff7d4b998584092de946e503.pdf?index=trueIn PDF document text
    • https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_395431d4494d462aae994b3cba59a2e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/wukopesutujedijugigurusi.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/wenugizeb.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

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F4 5428 bytes
SHA-256: f272ccf98ff95529aa75164dfe2089616137072375825c55db4c9f55b0642899
font_01_sfnt_off00010a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4D 10740 bytes
SHA-256: 86db918bf6ebe01949a5e7fdafa9869df2f72a7340a947b93cd54cebe655cfc7

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