Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a58eb86258c6a15…

MALICIOUS

PDF

79.2 KB Created: 2021-04-09 03:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cac783c889866451be59e079476ccd83 SHA-1: ad380b5e6dc2e9f86228e7894abf525bcbf4db8f SHA-256: 2a58eb86258c6a155b84a19132e534e3e331aaf9a0be00f1dfa989bae71b95af
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing lures, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Phishing.Trojan. The embedded URLs, such as 'https://maypoin.ru/strik?utm_term=commercial+treadmill+price+in+bangladesh', are likely used to redirect users to malicious sites. No scripts were extracted, but the PDF structure itself is indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://maypoin.ru/strik?utm_term=commercial+treadmill+price+in+bangladesh PDF link annotation
    • https://zobatovegu.weebly.com/uploads/1/3/0/8/130873738/kadedosowonelubix.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/remulipv1igv.pdfIn PDF document text
    • http://dkblogin-de.best/16639588375msz2p.pdfIn PDF document text
    • http://diguwejilevaz.22web.org/26656749281.pdfIn PDF document text
    • http://fastdonwload.space/vewenepnxys.pdfIn PDF document text
    • http://kakorixow.mygamesonline.org/wordly_wise_3000_book_8_answer_key_lesson_2.pdfIn PDF document text
    • http://crysety.xyz/jevunaopgd.pdfIn PDF document text
    • https://sulunekuzesafap.weebly.com/uploads/1/3/1/4/131406846/b65b1f.pdfIn PDF document text
    • http://pewekelexu.mygamesonline.org/aditya_hridayam_malayalam.pdfIn PDF document text
    • https://sujarusokebukok.weebly.com/uploads/1/3/1/4/131437349/fuwenixatipagoze.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/kupetevasivigobixenituro.pdfIn PDF document text
    • http://sellamorem.com/radio_button_form_submit_javascript8gmrs.pdfIn PDF document text
    • https://zopiwaseka.weebly.com/uploads/1/3/0/9/130969839/xanijaru-suwafamufa-vasiwevesav.pdfIn PDF document text
    • https://gomamuna.weebly.com/uploads/1/3/5/3/135304292/3614571.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/radio_shack_plug_n_power_wireless_remote_control_system.pdfIn PDF document text
    • http://vozobatenaw.mywebcommunity.org/jomexusulakovadivakixev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jumametewarad.rf.gd/8158595502.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/xosugukoxizubijipevubijat.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/97206004275.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/georg_fischer_cad_library.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/biharwap_2018_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/zageriruz.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/fipeloposofebujopej.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/sulokupoxirokukotozezotiw.pdfIn PDF document text
    • http://vatodulalidi.rf.gd/what_is_the_full_form_of_cpct_in_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/como_hacer_un_programa_arquitectonico.pdfIn PDF document text
    • http://kovovurimona.epizy.com/kuzenodedufi.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/29550737121.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59D 5532 bytes
SHA-256: 1a8e1d302ff0dc0239a00a69b2296e7b0b18191f0efa2a3184d6d1d7ce23db3c
font_01_sfnt_off00010831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 11344 bytes
SHA-256: 0877cc0a6285ca27e40c884205f97d2f56623ebf0ccb99c57a25f9104de2b9d0

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