Malicious PDF — malware analysis report

Static analysis result for SHA-256 651a0777e97c19f3…

MALICIOUS

PDF

101.1 KB Created: 2021-03-22 18:02:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: bfa2d123a3f08d6680b7bdb66f432d02 SHA-1: e4c194177607300422ef816a707e5572ff6d6dd6 SHA-256: 651a0777e97c19f3f197a9f47d1cd4de4128da6397a6aee00a693e05aae8535f
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it is part of a link farm designed to drive traffic to potentially malicious sites. The embedded URLs and the nature of the link farm heuristic point towards a phishing or content-scraping scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://bologen.ru/strik?utm_term=how+to+get+your+ex+back+book PDF link annotation
    • https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/nuvadojipe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414500/normal_5fe28b22a6ae8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463824/normal_6008fa3d9fff2.pdfIn PDF document text
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/8580754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_6022aa7120877.pdfIn PDF document text
    • http://xuxoromozura.iblogger.org/55646233035.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_5fe3b070658ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450747/normal_5fd7a4b72a917.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/cara_membuat_cv_di.pdfIn PDF document text
    • https://tuxatijofewimem.weebly.com/uploads/1/3/4/6/134686538/7815425.pdfIn PDF document text
    • http://mizarujil.mypressonline.com/rent_agreement_format_in_malayalam.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/structure_of_fatty_acids.pdfIn PDF document text
    • https://vafiradas.weebly.com/uploads/1/3/3/9/133988778/50f14383ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373526/normal_5fcd8c7b01c41.pdfIn PDF document text
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/837348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457006/normal_604e82fca0a19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416669/normal_6044def02d5e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408992/normal_6006b2787557c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wolobugoxew.myartsonline.com/how_to_find_the_common_ratio_of_a_geometric_sequence_fractions.pdfIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_825b60a8348e477a99495e3648c6284d.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_2c778610917748739a0d9e300b91bacb.pdf?index=trueIn PDF document text
    • http://xeketak.epizy.com/advanced_engineering_mathematics_zill_and_wright_6th_edition.pdfIn PDF document text
    • https://0c2a7d7b-be9d-4ef2-a94c-09ca905cc17d.filesusr.com/ugd/7d21c0_11730f05584141b38ebee107143432ae.pdf?index=trueIn PDF document text
    • https://db6a684c-bd73-4a61-997a-17040cc1d896.filesusr.com/ugd/bbbb20_84f10ec0555547b4897145a34b085f60.pdf?index=trueIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_d6babf340ce44a338a02f0949a1db408.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B5F 5184 bytes
SHA-256: 3edcdb7375c83395ba4ac85494740b5e9288c4bb8b0bd80f76802a31951a545c
font_01_sfnt_off00015d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D37 12384 bytes
SHA-256: 8e93bc09f9abf91fc94262677b5e0f32e79d3c4d59f1a2122251c21f7f33d226

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