Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0907ba70d3e31b…

MALICIOUS

PDF

86.4 KB Created: 2021-09-17 18:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 061454a70d52eb67aa20a7396f56f642 SHA-1: 8b0b0d19d4734c798500d24e02887aa4d4f5d5c2 SHA-256: 0f0907ba70d3e31b1d4dec9d75d1dd6eb00a290e3405ed93ba6a656bd80251f4
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF containing embedded JavaScript, which is often used to initiate malicious actions. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into approving multi-factor authentication requests or providing one-time codes, a common tactic for credential harvesting. The presence of numerous external links, many pointing to compromised CMS uploads and disposable hosting, further supports a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • 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 https://topinsolventa.ro/userfiles/file/95021935717.pdf In PDF document text
    • http://skupka54.ru/upload/m/wanalonogozozagemoduje.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/4827694099.pdfIn PDF document text
    • http://www.childofafrica.org/media/userfiles/file/besixezumovugenenojalepim.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/zarejosefitusibusimoro.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/10839049909.pdfIn PDF document text
    • https://groupunsur4.com/contents/files/85404155352.pdfIn PDF document text
    • http://zzfcw.com/file/fkimg/file/bopugiwopuxujomupu.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ad4cf5f6d9---binuvejatabopadiguvon.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613a60be8cf7a---waxapujixafa.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/zivaferagitawe.pdfIn PDF document text
    • https://ipekyolumedya.com/resim_galeri/file/52027208353.pdfIn PDF document text
    • http://identik.hu/editor_up/16832683764.pdfIn PDF document text
    • http://glttek.com/userfiles/file/37791246817.pdfIn PDF document text
    • https://semagro-msw.ru/pics/images/file/16461700890.pdfIn PDF document text
    • https://0a3exp.com/upfiles/editor/files/61981905271.pdfIn PDF document text
    • http://abarappresentanze.it/userfiles/files/31839479384.pdfIn PDF document text
    • http://isvpro.com/custom/files/30672832293.pdfIn PDF document text
    • http://pk.mo/userfiles/file/65493012480.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/dufopetolazotimonajuk.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/29978253084.pdfIn PDF document text
    • http://webbuilders.com/files/file/namededekuned.pdfIn PDF document text
    • https://www.l-games.jp/js/ckfinder/userfiles/files/74838948901.pdfIn PDF document text
    • http://citysoupsbellevue.com/uploads/files/fefaxifawiv.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/73375132889.pdfIn PDF document text
    • http://arisutour.com/ckupload/files/pizixagunovepa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=credit+card+generator+with+money+realPDF 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_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000104c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C7 17176 bytes
SHA-256: e99e7fa5ec72e3864832a136ce8c5d9d3eea2ace9da2bb2c6b25b27d184feaf1
font_02_sfnt_off00013123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13123 10880 bytes
SHA-256: ad63127ae111d6139deb09a491d0fbce8e1d5288d99807a29069d2bbcdb2778b

Open this report in the interactive analyzer, or submit your own file for analysis.