Malicious PDF — malware analysis report

Static analysis result for SHA-256 790ff15ef9e7a6e9…

MALICIOUS

PDF

206.5 KB Created: 2021-07-06 11:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 874c2c2cc6445c889cc152eaf376813a SHA-1: 0cbed7cf5b672c8b8ab80f266a1c70cfd97bde25 SHA-256: 790ff15ef9e7a6e92afe7228f36c76eb20ff2c1a2f629e167a6be71c54b50ae8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress upload storage, indicating an attempt to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely a phishing lure to download a further payload. No scripts were extracted, but the presence of compromised CMS upload links is a high-confidence indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/43ph4h93o0ukj25gjrdffam7i6/lepikoganekarinozimiwux.pdf In PDF document text
    • https://arte-salon.ru/upload_picture/56976564404.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/ralurus.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cad5a0da3---54957379166.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160740c781b412---jekinuwotunezokilijokip.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/nufevamumulew.pdfIn PDF document text
    • https://laptopserwis.com/app/webroot/media/files/mexapokepuwewokinetexepav.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/he0bt3mo0j3gdfd6751ps5nt6o/6553934067.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7575cd8c8---19660362553.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/094f7adcc6d58199c305d0e547143b4f/zegomaxusunodifazaf.pdfIn PDF document text
    • http://apcmagon.com/userfiles/demewabonaziji.pdfIn PDF document text
    • http://alltechsro.cz/files/25871482390.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/ecafbb5ecc3d0eb0df18cabae17a97a5/62985782598.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075706c1778a---paxekaluvewowoga.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16079cb2587635---dezupujasupamemejavifuxu.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7dc9d61a27---jupugogorefi.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c988ddbeb0---kebapusurumitozegemux.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3fc09c7ca---15349862601.pdfIn PDF document text
    • https://osikovo.eu/webroot/img/content/files/23528702754.pdfIn PDF document text
    • http://pandoreunion.com/clients/81456/File/dudesawud.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/21140dcf3e30dfd6adfed5e210b0d4bd/zuvudakalitinewujijatata.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6941aa19c---dojukelivatirukevilaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=dragon+ball+z+episodes+in+englishPDF 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_off0002ce91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002e6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6A3 17580 bytes
SHA-256: a37e5468b5aba7f6191ab552aa162a50202e4bb6bcafa45cfd92bfbd50a95ead
font_02_sfnt_off000313fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313FC 10772 bytes
SHA-256: 74e742573bc990dbdab9bb2a2478609776b47c1e4ea4041ae624350f78b3c5ab

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