Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc62bc751fb20928…

MALICIOUS

PDF

75.2 KB Created: 2021-09-05 10:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 26bc8d24ab848658ed8b6dbbd756c8bb SHA-1: b56b651678580e878d746f2f2ec879be004198d8 SHA-256: cc62bc751fb20928ebec0b8e6452ab2f2cc6fad80055f299890133c0fade46a4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing pages. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a focus on driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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://asthasupermarket.com/userfiles/file/lufuv.pdf In PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/7e6844d6696bf24cdb16cf31eda3ad24/lugeliva.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160bb28528bdb1---koragenoxulipegipoj.pdfIn PDF document text
    • http://avrig35.ro/uploads/fck_editor/file/legewavomedagi.pdfIn PDF document text
    • https://mygrind.ie/userfiles/file/47933745587.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160702c9bd9913---22971707331.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/kuziwozisud.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/votafifupumewuxakis.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/92782679729.pdfIn PDF document text
    • http://umiyawoodworks.com/fckdb/userfiles/file/duzarovegeri.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210706185501015.pdfIn PDF document text
    • http://abwessex.com/uploads/files/dazidegedaxis.pdfIn PDF document text
    • http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/57765129527.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/90419852051.pdfIn PDF document text
    • http://dataction.org/demo/dataction/media/kefozulawozew.pdfIn PDF document text
    • https://www.douggoodkin.com/admin/ckfinder/userfiles/files/wurul.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/0dd3733f8abf14c7aa560f0fce8a9ee3/wejebusukiwolifene.pdfIn PDF document text
    • http://olgapolyakova.de/files/files/71296431537.pdfIn PDF document text
    • http://cnex.cc/images/blog//file/zapinupemosinibogusekata.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdfc7a196c---femetipurifemojeg.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c73ec60a054---38163214443.pdfIn PDF document text
    • http://uzmansporzeminkaplama.com/resimler/files/nafalawufo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=bose+soundlink+color+1+manualPDF 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_off0000be73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE73 18188 bytes
SHA-256: 8b2ec0b32ded316d3717f3de28e6c46e3949105f3395f0ae1172320562c49d18
font_01_sfnt_off0000ecc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000104e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E0 10728 bytes
SHA-256: 62ac5f03fa9299201b6fbb7dcf98d8d03905ed2244202e358b0f1455f3c72621

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