Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b322e896c9cda8…

MALICIOUS

PDF

98.9 KB Created: 2021-09-01 02:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a9a0b0fad197f6535f143a0445d7863f SHA-1: ce366fe2894836c1d962c3f7c63ceacaecba6d2e SHA-256: d3b322e896c9cda8119ed7ac74d263c749051db61540d59dba5ccf077aa788e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to lure users to malicious content. The document's structure and embedded URLs indicate a phishing campaign, likely designed to deliver further malicious payloads or harvest credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://huntic.ru/uplcv?utm_term=about+water+borne+diseases PDF link annotation
    • https://elegune.net/files/galeria/files/3355214703.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fb6e1466789081568b779a7d73ca1ee0/xejeduwibaxozibaf.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076b0ee6602f---solobegijuxazimi.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/m6cnmqnveigqg0e7dfv113kn76/43835474311.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5dc9a1eb89087ead7d79d8c51370dc64/96107677293.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/80001171589.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b16762ab5a0---xeverirevofepujipap.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/dac750b052c1c213a55a5cd66c98b9fc/33982412478.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a684870b309---ruxukabesojili.pdfIn PDF document text
    • https://businesslife.com/content/file/9697590474.pdfIn PDF document text
    • https://a1-recruitment.fr/v2011/Files/fck_upload/file/85696338074.pdfIn PDF document text
    • http://lezeckastenakosice.sk/upload/files/janezadaxetuli.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/528fae0fe3ed6e2545c7e4f177f1fc87/70572262781.pdfIn PDF document text
    • http://sbcnepal.com/images/file/fegelivin.pdfIn PDF document text
    • http://upsshop.ru/ckfinder/userfiles/files/libapuleji.pdfIn PDF document text
    • http://screen.by/images/file/pudoweraximakafozoge.pdfIn PDF document text
    • http://www.toptehnik.si/images/48267644419.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/52645523803.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/a7sm7lqa18af9aehqf0qerk1g6/mepijokinotukelu.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106ad17e6893---30673803531.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607644591c2bf---zosizugemegalogenufe.pdfIn PDF document text
    • https://propiedades.net/ckfinder/userfiles/files/45792425598.pdfIn PDF document text
    • http://fotobambagiotti.it/userfiles/files/lozegopijit.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_off00011b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9A 10500 bytes
SHA-256: f73fbe753fc6b5dc3086538627c0d71e58f359c7b3acfac51ffceb7fd2149b3a
font_01_sfnt_off000133b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B6 18804 bytes
SHA-256: e438002b1bc470955b5ad16f4f7444acb9e4335e4e4211722861b79989b64d02
font_02_sfnt_off000164b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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