Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d30192fd449c18d…

MALICIOUS

PDF

71.3 KB Created: 2020-12-01 18:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bf277065a86aead22f2225bbbcdbd5d9 SHA-1: d886f7c9629be3c873a5e2ee80a5ca5555fb333e SHA-256: 9d30192fd449c18d9e63543be68d98bb83ea6336194bfb79751f5e2004bc7fc2
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-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://traffnew.ru/strik?utm_term=us+history+chapter+10+section+2+guided+reading PDF link annotation
    • https://sopoxovolofu.weebly.com/uploads/1/3/4/5/134509961/12a3d16ab457.pdfIn PDF document text
    • https://kadutazufe.weebly.com/uploads/1/3/4/6/134639852/4554067.pdfIn PDF document text
    • https://budaxopam.weebly.com/uploads/1/3/4/7/134711784/a58821.pdfIn PDF document text
    • https://jumozavuna.weebly.com/uploads/1/3/4/5/134598597/fozepegu.pdfIn PDF document text
    • https://fuxomuvepanagal.weebly.com/uploads/1/3/4/6/134611725/2744187.pdfIn PDF document text
    • https://selubigal.weebly.com/uploads/1/3/4/5/134518702/weporabuwiwivofe.pdfIn PDF document text
    • https://pisilobeko.weebly.com/uploads/1/3/4/7/134728547/zijokebawibituko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/vacuum_brake_bleeder_tool.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c273a13a450babf34cb7/t/5fc270c5bc819f1cf4276f81/1606578377578/rujulajaxedugasiriw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1baba2cf09257bd71d527/t/5fc511473c02f22b9dacbb68/1606750535912/fejufumor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/879d8a7b-67b2-4729-99dc-b87ef721fafd/language_of_anatomy_worksheet_answers_lab_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc100ee92c50b1a1e781c95/t/5fc14c64eaf37e3b64cc1a86/1606503525519/plants_vs_zombies_2_gems_hack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ba7da72-88d3-48d6-9a00-44a82f456a61/republicain_lorrain_necrologie_hagondange.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ca3a3dfdd95b60e15de0/t/5fc5e35ee6d49a06bb5ee274/1606804318871/jhs_185_edward_bleeker_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eab716f6d44b07bedc8b/t/5fc21da33485235c860eef3a/1606557091484/what_is_the_nature_of_operation_research.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5b75a97599144eeec634/1606376310011/vepiki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c43aa87939686407a428/t/5fc204456457125654831843/1606550598571/study_abroad_ncsu_scholarships.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29C 5724 bytes
SHA-256: 8533df729d31b4da9eccc8a8a415b507b73473cf6c1b670e255c79e9387c8a10
font_01_sfnt_off0000d61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61F 10528 bytes
SHA-256: 42274ee4ca67496f9bfb1356a41b4f012238400e3949ea97554eefce09db9ab0
font_02_sfnt_off0000fa36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA36 16116 bytes
SHA-256: f4880008a77c71ed4d8baef54a8d11df2e42451f69d85433593bddf4f5642f3d

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