Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69e05af29405262…

MALICIOUS

PDF

79.4 KB Created: 2021-08-25 18:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: aa9210590282499edcfb0088230aeed4 SHA-1: 98bbbab5fa9adc8741196d03dd64fe20c7a56576 SHA-256: b69e05af294052625389f3365d6d33ae5c72ade2253b3289bef59fdb7d566222
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. It contains a link farm with numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The presence of these links suggests an attempt to lure users to external sites, likely for phishing or to download further malicious payloads. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or redirection campaign.

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://saxonrt.hu/img/userfiles/files/34494256998.pdf In PDF document text
    • http://beautifulmoda.com/userfiles/files/jejijomiwopunavopok.pdfIn PDF document text
    • http://mkconline.com/landmark/ckfinder/userfiles/files/rewixosuditoso.pdfIn PDF document text
    • http://farmaciafasolis.eu/userfiles/files/woduwuda.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9edb32196b---93469546104.pdfIn PDF document text
    • http://moto-trend.cz/public/files/fck/file/81753959313.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/gaxulilatokata.pdfIn PDF document text
    • http://sdds.be/userfiles/file/legamexever.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/p9j4neeocltu676f906obc7g6t/22634098229.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/d8ek4t7146hgq29d09bt95k1ng/90414990186.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/33692582367.pdfIn PDF document text
    • http://100gastro.cz/soubory/files/13280609090.pdfIn PDF document text
    • https://hashtag.school/userfiles/file/wivulujivej.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611c23e42b3b6---27921278611.pdfIn PDF document text
    • http://av72-reklama.ru/userfiles/file/1627151087499eeb33fb9cac16b755.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/tejafelunanevasenikofumer.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608316c976cf1---26981777526.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/vpi4p9uqhscn668osd3povem7h/pomapagebudubebesuwase.pdfIn PDF document text
    • http://lawngo.net/fckfiles/94728930242.pdfIn PDF document text
    • http://chandravanshi.com/userfiles/file/89023993732.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/161156cbbb6f57---27364768703.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=bhaagamathie+tamil+full+movie+watch+online+free+tamilrockersPDF 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_off0000d013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD013 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE825 17408 bytes
SHA-256: 646380c9e48186894093257630a4307821af3ceb85ccaf0165e9023b5ac0c5e4
font_02_sfnt_off00011608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11608 11180 bytes
SHA-256: d3c39b443cb738510064d371071f17713b1ea6fa3e356ffb967242b4ac2f7429

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