Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd2162e7fa8fa63…

MALICIOUS

PDF

67.1 KB Created: 2021-02-02 08:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 69c4d40dadebfe033e8b1188e4ea9b6a SHA-1: 03e1985450316be808d3ddc2ac5c9f1430d98e3c SHA-256: 7bd2162e7fa8fa6303c9bdab1b765fa72b48e3ee4a2831fae4da70393b2b2d95
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of a PDF_URI pointing to 'jottigo.ru' and a heuristic for a 'SE_DOWNLOAD_BUTTON' suggest a phishing or social engineering lure to download a payload. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the overall indicators point to a malicious PDF designed for payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/aws?utm_term=canon+eos+sdk PDF link annotation
    • https://cdn.sqhk.co/vezubusevof/hjhhsgC/vonikiloxekepone.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/YZjXujd/how_to_make_soap_cutter_box.pdfIn PDF document text
    • http://vobasexukux.iblogger.org/zigojasijaruwabijeruwem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dukedofabi.epizy.com/alai_darwaza_information.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/fofisenazatubujojomapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/problems_of_agriculture_in_ghana.pdfIn PDF document text
    • http://rufegojokod.epizy.com/top_english_albums_2018_free.pdfIn PDF document text
    • http://vevemaj.rf.gd/nedofaziromisobafaleda.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/6999924676.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/menagerie_weapons_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/kizukazapuz.pdfIn PDF document text
    • http://burijudipo.epizy.com/fepeb.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/form_8606_non-_deductible_ira_contribution.pdfIn PDF document text
    • http://fonobufusig.rf.gd/pomebepa.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_off0000cba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA6 4660 bytes
SHA-256: 74d089f1155a7c7be5bb493331c74edcae5ccf4fc4af38169036389008f35ee1
font_01_sfnt_off0000db91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB91 10828 bytes
SHA-256: e649511bf0227643cd47d29df3df11ccec56d64644e6581947a4a6b32513b1ab

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