Malicious PDF — malware analysis report

Static analysis result for SHA-256 96102577edba6967…

MALICIOUS

PDF

67.8 KB Created: 2021-09-24 19:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 80dbdbd42a6548e652be6512340b4a4f SHA-1: 14da3d76ba98260f03ad3fec46123143955c7aa1 SHA-256: 96102577edba6967c73deaca1cfe65c1fdb6cc11d9dcb242d310b5f0bcf48f33
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains embedded JavaScript and presents an image-only interface designed to trick users into clicking a link. The embedded JavaScript likely facilitates the redirection to malicious URLs, such as the one found in the document body, which is a common technique for delivering further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://moscowfashion.net/content/xuploadimages/file/22358480650.pdf In PDF document text
    • https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/sodujunubasatewoxid.pdfIn PDF document text
    • https://erdenet.mn/userfiles/file/45158913797.pdfIn PDF document text
    • http://diamant-x.sk/UserFiles/file/64401328635.pdfIn PDF document text
    • http://hospitalityroyal.com/upload_files/file/xudokovomov.pdfIn PDF document text
    • http://seasonmediagroup.com/pic/file/49293976026.pdfIn PDF document text
    • http://winterwonderlandzundert.nl/uploadimages/files/gipezebexopipatokulof.pdfIn PDF document text
    • https://muachungbaohiem.com/uploads/userfiles/file/kogibunitena.pdfIn PDF document text
    • http://thuannam.com/image/files/58327407631.pdfIn PDF document text
    • http://capri.lt/userfiles/files/kuxogexufekirevefikaw.pdfIn PDF document text
    • http://www.serenissimaservizi.com/files/14880944558.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/feloxudusizumafu.pdfIn PDF document text
    • http://iccjsc.com/images/uploads/files/mofozezukex.pdfIn PDF document text
    • http://air-con.ru/upload/files/tufufuburujekaduwapesove.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/ramodoretagoxaladetem.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/3f16bbbd0f37bc7c8b837867418dd390/gogudexewe.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ukna25tkq6lajte50urduea0fp/67805354072.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/52922308173.pdfIn PDF document text
    • http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2109110537211624268v5uoo.pdfIn PDF document text
    • http://geodeslaboratori.eu/userfiles/files/sojus.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/94917337131.pdfIn PDF document text
    • http://abbeytraining.net/userfiles/file/69805448739.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=watch+venom+2+full+movie+freePDF link annotation
    • 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_off0000ad31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD31 14580 bytes
SHA-256: 8a2bcdb0179a6f13472486c6db63043a0383725aea540f5be36e9e342896c678
font_01_sfnt_off0000d11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11F 10712 bytes
SHA-256: 70c458246e9e58c2bc9ad83d67c79b0340777411efb31a6bbe9dd07623bb3bc7
font_02_sfnt_off0000e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE996 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1