Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e444d04899cfc8…

MALICIOUS

PDF

215.4 KB Created: 2021-08-01 07:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ab8dbd89336923b1a0bd65c77e450334 SHA-1: d62b6eba12c61cc81d0c8de5bccfb051b5bd11b1 SHA-256: 48e444d04899cfc87a80ae16f9e2b6e67216d8eaaf2337bb365091ba5ae3db8f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The primary URL, 'https://inwebjor.ru/uplcv?utm_term=saw+7+full+movie+download+in+hindi+filmywap', indicates a lure for pirated content, a common tactic for distributing malware. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9709

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://inwebjor.ru/uplcv?utm_term=saw+7+full+movie+download+in+hindi+filmywap PDF link annotation
    • http://kemmurad.com/webroot/img/files/panekafexabivunor.pdfIn PDF document text
    • http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/90205991457.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6158887f6---95211490558.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/zakebejejuzupizexosepip.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/nitigunowusotiduwur.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/6m6fhaak8qkuo7qf25uh6vkdti/99629211801.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/30623b18860f932e271b1ad5559d2910/63095297013.pdfIn PDF document text
    • http://eros-arena-reutlingen.de/eros/userfiles/file/75506718433.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb9ea89810---zulivota.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/am2f3nf913sbk8tck3oqlgk5pd/12767792763.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e7db60e9674---68048823658.pdfIn PDF document text
    • https://verredistri.fr/xmedia/file/59726341061.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/51838532622.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/s0b5pjo5fhasisi72ujm528225/valinelunumemagofiramos.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16084cfb5b3a1e---47517878983.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092194c492c0---folaxawof.pdfIn PDF document text
    • https://quatden.vn/webroot/img/files/zepijomojoverikibi.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/me1oopqhjbmht0pqqguj2lr3mt/85613081942.pdfIn PDF document text
    • http://cnp-inc.com/ckupload/files/jisibot.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a39be37c1e2---fapuwepitilapamojasom.pdfIn PDF document text
    • http://pi-consulting.ch/download/93007494137.pdfIn PDF document text
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a27404a16ba---13875808440.pdfIn PDF document text
    • https://mexico-airport-transfers.com/ckfinder/userfiles/files/59529415965.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609717abe2700---xawekemi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E932 19832 bytes
SHA-256: 3eef6359c92e8aeb2cba65b7718125392eb42cbcaaaa742631a92cb5b4dd3447
font_01_sfnt_off00031d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D01 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00033518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33518 10888 bytes
SHA-256: a32bf184e4a58b4c99893754be91deda7b790ee3d791264c9e57e726b0e3f3dc