Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc00ff2c18f1e7c…

MALICIOUS

PDF

82.6 KB Created: 2021-03-24 06:21:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6748af87b7d99508e8e1370feff3fc75 SHA-1: d5bfda5d8739cf020a76c4bd7ee1323f0af5af38 SHA-256: cfc00ff2c18f1e7c12be93ff436755182b8b5bd574a14fff75d8a04a6909ab12
104 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a 'service manual', combined with a heuristic indicating a visual download button, pointing towards a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wix?keyword=2005+crown+victoria+service+manual
    • http://cg-designer.xyz/12924477829edvpt.pdf
    • http://appletopshop.ru/morapuwuxsyvou.pdf
    • http://italiahot.fun/tigutikepunibui04q0.pdf
    • http://dofujifeluradep.medianewsonline.com/meningite_bacteriana_por_otite.pdf
    • http://pixxel.life/hayward_pool_heater_h250fdp_partsbcbpo.pdf
    • http://com-connexion.xyz/lozagawenj377u.pdf
    • http://lugabev.mygamesonline.org/1183309455.pdf
    • http://ins.expert/bemudinmtf7g.pdf
    • http://smirno.life/miguel_serrano_nos_el_libro_de_la_resurrecciongob2l.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d23604d5-c162-428b-b25e-a126f63c832d/92324993097.pdf
    • https://uploads.strikinglycdn.com/files/87ed8eef-ad43-4733-9655-d50c6fe486de/citi_bank_credit_card_payment_bill_desk_india.pdf
    • https://s3.amazonaws.com/fasudikek/57666895803.pdf
    • https://s3.amazonaws.com/tirimofufemukat/2911074980.pdf
    • https://uploads.strikinglycdn.com/files/8e8868c1-e140-4f5d-a5d3-eac029c2221b/57124616406.pdf
    • https://uploads.strikinglycdn.com/files/7b184601-901e-4039-84a5-2f28f3743788/monarch_lathe_for_sale_uk.pdf
    • https://s3.amazonaws.com/vuxagixil/dinamap_carescape_v100_service_manual.pdf
    • https://uploads.strikinglycdn.com/files/4d0006fa-5b07-4973-83ce-9c28a4649cfe/48669713911.pdf
    • https://s3.amazonaws.com/vukujidor/mifubodafur.pdf
    • https://s3.amazonaws.com/kukupunopedon/brenda_fassie_black_president_song.pdf
    • https://s3.amazonaws.com/lolijexejomak/63453308409.pdf
    • https://s3.amazonaws.com/naxizugenabi/ledikujerafitulurajedetu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee5.bin
690a48d70df5d5d9bfda5ef51619176e8e0d7a93a29186bce514ef4641436afe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE5 5400 bytes
font_01_sfnt_off00010144.bin
7baf2a59e43bc4abfe9b3422c398bc34e4d3440b7cba4308cbe7dd5df21f95fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10144 10984 bytes
font_02_sfnt_off000126e5.bin
ee27a12a115eae36e39cf1c0b50e6e048486143ae1fdf15ab956a97173751027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126E5 16244 bytes

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