Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2389e33d4d1ad40…

MALICIOUS

PDF

67.5 KB Created: 2021-09-25 15:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f4f8a5fd31049bf214ad728412ac9a0c SHA-1: 930393da737b98286a75d430a6fbb790ee54249a SHA-256: f2389e33d4d1ad4019d9ef74c060e79217a8c326895991bfa1ada58bf72d6434
176 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. The PDF_IMAGE_LURE heuristic indicates it's an image-based document designed to trick users into clicking embedded links. Numerous URLs are present, many pointing to compromised CMS upload directories or disposable hosting, suggesting an attempt to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 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.
  • 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.
  • 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://garglob.ru/uplcv?utm_term=sonic+pokemon+rom+hack PDF link annotation
    • https://fruitssupplier.com/app/webroot/img/files/kutobe.pdfIn PDF document text
    • https://nedimgame.net/calisma2/files/uploads/nejapujexebere.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/d2ae4d9f51b2d9c673595ef5e9724153/80956476424.pdfIn PDF document text
    • http://chukysovin.com/img-svc/files/dinovabiruxup.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/65027712429.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents/files/wuxetoviterowoso.pdfIn PDF document text
    • https://tectrongim.com/uploads/files/legipemipaxegudewiv.pdfIn PDF document text
    • http://tecniagua.es/uploads/ckfinder/files/96866116719.pdfIn PDF document text
    • https://hotelgaric.com/upload/datoteke/lisakanitifozimidelux.pdfIn PDF document text
    • http://www.ondebiz.com/userfiles/file/jijipi.pdfIn PDF document text
    • https://shevian.com/images/file/81876188199.pdfIn PDF document text
    • https://aspirecambodia-edu.org/userfiles/file/sivulamewefefakujiruka.pdfIn PDF document text
    • http://sbsinternationalschool.org/userfiles/file/xegevosapanenosemaxoz.pdfIn PDF document text
    • https://xn--espaoldetalca-lkb.cl/var/www/html/upload/file/kajezegutu.pdfIn PDF document text
    • https://insolite.lu/img/userfiles/files/juburirok.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/b23c0bfa3f261642d704dc715c79bb11/xivafusisagun.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/3810456002.pdfIn PDF document text
    • https://mandarinkinesiska.com/userfiles/file/75991571804.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161473576cc611---56064461586.pdfIn PDF document text
    • http://hoanggiaphatstone.com/upload/files/vofinagexaropex.pdfIn PDF document text
    • https://pankajplast.com/ckfinder/userfiles/files/dobavukotojovajofapo.pdfIn PDF document text
    • http://scuderieverdina.it/scuderia/userfiles/file/21395242921.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_off0000ad1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD1D 10496 bytes
SHA-256: 56473d549c8209b93b8aac51fe39fa26ddcf0a37bcaebfaae5a51198e4adb980
font_01_sfnt_off0000c4bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dcce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCE 14368 bytes
SHA-256: 9551db6656dea5ba2e89699a97b90130a73c8dacbdb8bd1f15388c0d63590552

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