Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed2e9c6dd2820f8…

MALICIOUS

PDF

71.4 KB Created: 2021-09-24 23:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: bddb30f2132a7231d969e358ca90c8a1 SHA-1: 41c5859e047c742b34e960c3a147a57c673a9982 SHA-256: bed2e9c6dd2820f87e73dcf6a7b5970d07a7a25f6b10f5418abf84e25a4e4996
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution attempt. ClamAV detected the file as Pdf.Phishing.Trojan-d2568dad23a94d95, and ML classifiers also flagged it as malicious. While no scripts were directly extracted, the structure and heuristic firings indicate the document's purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://k2plusinterior.com/userfiles/65954338864.pdf In PDF document text
    • http://suitianhose.com/uploadfile/files/gipoki.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/tizuwazuvodazadojosuduni.pdfIn PDF document text
    • https://campermagazine.tv/public/file/39490613642.pdfIn PDF document text
    • http://szm.hu/userfiles/file/fanogo.pdfIn PDF document text
    • http://china-spec.ru/userfiles/file/90899830861.pdfIn PDF document text
    • https://kaptenhoki.net/contents/files/66828055693.pdfIn PDF document text
    • http://offerparts.com/upload/files/84583320658.pdfIn PDF document text
    • http://bronnicy.inhome360.ru/admin/ckfinder/userfiles/files/sunabapikob.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614057606aeae---91045067576.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613682c4de493---zezogokisolapi.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/39310129634.pdfIn PDF document text
    • http://union.travel/ckfinder/userfiles/files/jepazosipibosugetilimux.pdfIn PDF document text
    • https://pass-eco-energies.com/ckfinder/userfiles/files/losufisebuvemi.pdfIn PDF document text
    • https://www.tamilsaga.com/ckfinder/userfiles/files/22124108186.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/waxebux.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e7c2cf7d0---11302769338.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/nibojuju.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1614ae43cdd866---56830751290.pdfIn PDF document text
    • http://zxpgw.com/userfiles/file/wejewavokapedisenevozixo.pdfIn PDF document text
    • http://ideviceplus.nl/app/webroot/files/userfiles/files/pufuguxobasageke.pdfIn PDF document text
    • http://huanghels.com/filespath/files/20210919082230.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/wajivoripipakubomagugi.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/d097790270b8a27d4f346ee6ac504b20/wevavakogepide.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=download+ben+10+alien+force+vilgax+attacks+in+100+mbPDF 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_off0000b4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4F3 15556 bytes
SHA-256: 2f58a8064aed3f2b45381d1213ab43b5c99a83c14f4f8df35ea671342c2185c4
font_01_sfnt_off0000dc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF443 11480 bytes
SHA-256: 5f2ff0fe53ec7c85202961e0a943f271a20e0b719ba34b637c75415b8bdc9a95

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