Malicious PDF — malware analysis report

Static analysis result for SHA-256 0246998315679e73…

MALICIOUS

PDF

106.5 KB Created: 2021-07-25 13:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 9a318cd8b18b855c10b78db49e74a7ab SHA-1: 226acd0810c01d6c54bac30e7dda00c55dedd5c6 SHA-256: 0246998315679e7331bbfe51656e805460e38599822b85a703fad23531a13d98
156 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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://446888.top/userfiles/file/gitogejetumujalo.pdf In PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/8tjqchdmsl9jdomoc2qpkusocj/joxomapabizezimul.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/vc9vs622s9dft9dcq1b19nf0d6/24798792649.pdfIn PDF document text
    • http://chinazzjx.com/d/files/66322851107.pdfIn PDF document text
    • http://mega.kz/media/upload/files/30472145059.pdfIn PDF document text
    • https://cristalensi.com/public/File/kofifuwesupuwolefidijiv.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/c207d1082e4456c11c04d373bc234ecf/nisawamiwuladomebaruxeveb.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/a6a6245093846eb66fd17c243b343db7/fesusosugoporogited.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/0hsom2efbh1r3gs4fl9lc6k31j/53246696979.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/s28941cn75kulj32o47has0phc/vivukefitex.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/rufuzekojulodoludigu.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e49a99bdb---77049019408.pdfIn PDF document text
    • http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/pirokovodatadivel.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/wubukulanaxek.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/mbo0qm2a90kgu0gsk1pldashi1/wabovuxirapogekekenoxamoz.pdfIn PDF document text
    • http://www.asslar.de/downloads/92092825062.pdfIn PDF document text
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/46473700213.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1609e236ca775d---kurelumowojafugule.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/85619902464.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f16cab5fab---63726844517.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3c35a713732cd4f050a2bb7a9359a4e0/72780636084.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/tibut.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/6b4b6b040b4b2e773aa25b66188f2914/zowavuturaw.pdfIn PDF document text
    • https://transpack-krumbach.de/_upload_bilder/_filemanager/file/zabitubafu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=codes+for+anime+fighting+simulator+2020+wikiPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001215f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215F 16208 bytes
SHA-256: 4602efdc27effd6d0b9796dd62a14020f6514d216ceac1da6ee579af8a0da4e5
font_01_sfnt_off00013725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13725 11352 bytes
SHA-256: 849053eb1fcd87199b1b8c4789994c9eafb8ac169c15058f7c34dd3ae912de9d
font_02_sfnt_off00015199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15199 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000169ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169AB 18752 bytes
SHA-256: 95b56b3adf134e815c05761f4c414ec6f3a1adf693c36f7bb1ac5ef79fa8bdc9

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