Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb0bf2866cb531b…

MALICIOUS

PDF

95.9 KB Created: 2021-03-17 07:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc906d36c25f6cf7d9073f8f03106a57 SHA-1: 9528c9803501c1131c76b9675ce0eda8f0b30599 SHA-256: 3eb0bf2866cb531b08fef1de23c31f2820c3c41c8fd568990f778de42454234b
164 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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/wix?keyword=long+sands+surf+report PDF link annotation
    • http://xexapitanegis.getenjoyment.net/sets_relations_and_functions_class_11_solutions.pdfIn PDF document text
    • http://jibakerutev.mypressonline.com/rasedoxiver.pdfIn PDF document text
    • http://sumigemag.mywebcommunity.org/how_to_tighten_belt_on_proform_treadmill.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d2e66f7-273f-4b5a-b314-82f99a24d903/how_to_unblock_flash_player_on_mac_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/kuvuporujetoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d987928e-f476-40e4-9f6d-d0448fdfcdb1/71703278176.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/game_minecraft_gratis_untuk_android.pdfIn PDF document text
    • https://4cf2acc4-d143-4013-a78d-f21de0873c4f.filesusr.com/ugd/e4636f_e31c41f9537d4e7eac004336f78f561a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/12359287233.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/sve_moje_bitke_janko_bobetko.pdfIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_ac594ff01be644098272351e208303f6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/penoriliwewovomepebuz.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_d9bd21efa5864ffe8f37cd033654f27f.pdf?index=trueIn PDF document text
    • https://87098103-4d08-48bb-90a6-807b0ef734b2.filesusr.com/ugd/1f49de_e87361e50bc3437e93aabfe83b62479c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/69066418856.pdfIn PDF document text
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_9bd87e4738464ec2adaa19a59537d463.pdf?index=trueIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_331b7583f7c141149c963f10ac06f3c8.pdf?index=trueIn PDF document text
    • https://c6506652-bf5e-4f52-be36-03dbfaede22c.filesusr.com/ugd/f74919_6485dad2407142d1bd665ca2e3903ab4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/99798580612.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/medical_report_form_500.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 8

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_off0001374b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1374B 5116 bytes
SHA-256: f3f9e00ee3af728633b9c5b7fd6a782bcf85104130b50123aa13f0ff27506b47
font_01_sfnt_off000148cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148CD 12312 bytes
SHA-256: e5da736dbc8f50de855536a6d5ac099d079e55c102da03ccf623a8719e7845e8

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