Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bc674d240b4675…

MALICIOUS

PDF

79.6 KB Created: 2021-08-30 19:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7edfef611b8b669216e6477130096a1f SHA-1: 8b7091dbdc0e4e3e3ca473f4f5610e8c5860c03b SHA-256: 07bc674d240b4675284f64217ce1333b20fca17d86d0572d666fa2c58c49e6a5
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://huntic.ru/uplcv?utm_term=windows+movie+maker+android PDF link annotation
    • http://erictex.com/ufiles/files/rowozujaboxit.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/gatanawimetix.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/nebinazanikusutadadopewij.pdfIn PDF document text
    • http://orvosvalaszto.hu/uploads/files/79430308648.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1609db59fdaa58---26045197715.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/ea310d6dcd8f3131bd295ae8c07e9e8e/situsafefuxume.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c365df74b33---gusaxijebitus.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/tegatig.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/84013762520.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/43254387692.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080816317951---mulafominege.pdfIn PDF document text
    • http://wujipacking.tw/upload/files/11617462468.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16089e697b5a12---xosogevosovonodavejogox.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/gma32jgiidc9bf0u7fvadt0bh3/lejox.pdfIn PDF document text
    • https://yuanfuconstruction.com/ckfinder/upload/files/xelatepifunakiworagamo.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/zifovixelifukiwonat.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8d46e230b---92977862225.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8b3665be2---zegoke.pdfIn PDF document text
    • http://daydala.com/userfiles/file/jovixase.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce7488290f---firirorarewudif.pdfIn PDF document text
    • https://comfort8889.com/upload/files/67906788337.pdfIn PDF document text
    • http://cheumst.com/upload/fckeditor/file/fuvudino.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_off0000d35b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB72 10500 bytes
SHA-256: 7fdf22bd9914a612f3355997f05a8b7042b6b4593c746647d9dff118e26dd24f
font_02_sfnt_off00010358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10358 17252 bytes
SHA-256: db78e62064136a88ccb8f5ce28ceb88c64768df6fd458e49d2fec22bbec077a7

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