Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b32e9de9d066e9a…

MALICIOUS

PDF

71.2 KB Created: 2021-03-14 07:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 69321a72b74037ce2eaf9e8c94aa754d SHA-1: 4da85ff9ac73dc6a1e796d680b3a5b5727f0e682 SHA-256: 7b32e9de9d066e9a6477dca626bfada657fbc486444de44a400fec0b4973e229
156 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'PDF_SEO_LINK_FARM' heuristic and the presence of numerous external URLs. The primary malicious URL identified is https://soxebez.ru/wix?keyword=unit+8+quadratic+equations+answers, which likely serves as a landing page for further malicious activity. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/wix?keyword=unit+8+quadratic+equations+answers PDF link annotation
    • http://famozosivupiwij.sportsontheweb.net/95826117170.pdfIn PDF document text
    • https://tavebesu.weebly.com/uploads/1/3/1/3/131381332/ruvanodepebetiz-nabelodaxulul-jigigez.pdfIn PDF document text
    • https://gakafapokizi.weebly.com/uploads/1/3/5/3/135319358/2833365.pdfIn PDF document text
    • https://tilivugex.weebly.com/uploads/1/3/4/1/134108965/pejugefubekizirebi.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/jiludisazikugigizoto.pdfIn PDF document text
    • https://raxisova.weebly.com/uploads/1/3/4/4/134494277/xonibavajupifi_lumikutajor_xumal_xagetonaro.pdfIn PDF document text
    • http://dilawiputonu.mypressonline.com/41269376075.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/uyZ09ha/horizons_fcu_routing_number.pdfIn PDF document text
    • https://rotutokobuzafoj.weebly.com/uploads/1/3/4/4/134455929/cf16e47edae.pdfIn PDF document text
    • https://lapaterema.weebly.com/uploads/1/3/5/3/135321282/95de2e0c33a871.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/eSe7ugd/78152437128.pdfIn PDF document text
    • http://fagogit.sportsontheweb.net/advanced_english_listening_test.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_bec6cade20bd45a6a029ca5ec2a055d7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muxegeza/mukek.pdfIn PDF document text
    • https://8569cc17-8b2a-4187-ace0-95b0550b99f0.filesusr.com/ugd/d6eede_388921894cc14effa4de66f5b36c9227.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/gomipe.pdfIn PDF document text
    • http://foxukekamusun.onlinewebshop.net/react_native_mobile_app_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/zaboso.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/kovaak_s_aim_trainer_free_no.pdfIn PDF document text
    • http://vexabimumemig.atwebpages.com/fezojefobidelopigi.pdfIn PDF document text
    • https://bcbc83ff-a82b-4234-bf1d-c69e8cae54d5.filesusr.com/ugd/057c82_9fb06def5cd746cebee7f27ccc4135ab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/whats_the_3_day_potty_training_method.pdfIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_fcae2cab7d764d36bf22c1c6b154cf32.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_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 5304 bytes
SHA-256: 9bb80533709ca5fca4c0521d2837be14d4236dd8f08c4403cf5b46eca712f5fe
font_01_sfnt_off0000e94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94A 11148 bytes
SHA-256: af1fc4dd5a3242b2b5e17f6fcfaae55852a7b0774d43b2935b62c475d7869a4d

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