Malicious PDF — malware analysis report

Static analysis result for SHA-256 802049170ada7954…

MALICIOUS

PDF

88.4 KB Created: 2021-07-06 11:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6429fc129cbc7ee713eefb22e87dff38 SHA-1: 2d8619023bdb6f0a0461c9948b013066933c3e75 SHA-256: 802049170ada7954c21bc720d912a44c54a73c68cd334f0a28803f508595d82f
156 Risk Score

Malware Insights

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

The PDF contains a large number of links pointing to compromised CMS upload storage and other disposable hosting, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The document body was unreadable, but the heuristic firings and numerous URLs are sufficient evidence of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://auxerretv.com/content/public/file/36068430402.pdf In PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/38ab632e66147bf4520e24003137835f/futatorasebu.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/zozuxivapusuworupirosikon.pdfIn PDF document text
    • http://hillsdalehorseboarding.com/ckfinder/userfiles/files/nelasarazepuxelifijelid.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/d1fcf30793a3d959730eab24c1c41f97/32647349028.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/negijazewipawiw.pdfIn PDF document text
    • http://ipsgroupjjn.org/userfiles/file/61310364230.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607cab88e58a4---98796076487.pdfIn PDF document text
    • http://westernstudioservice.com/admin/userfiles/file/99915213796.pdfIn PDF document text
    • http://krzysztofmalec.pl/gfx/fck/file/xopeniwumalojefamikav.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/v4n1rtbivd34t2qbkdbjq6mar2/32933065020.pdfIn PDF document text
    • http://stattus.com/assets/file/29233585294.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/7d39l5qafg9khqofrr361et6sh/wusadamajen.pdfIn PDF document text
    • https://booknowrentalimo.ch/userfiles/files/78076912843.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/72h8rlne7dff97c172000omdg2/10195334440.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/qfqmf6g4b49b8n0qodivopipcl/nowavuvikejatuxu.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d734544241---28380004970.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/kuxudilodupenenupo.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160afbb0985348---1297318656.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/watokedewipixix.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/88219987086.pdfIn PDF document text
    • http://sochi-polyana.com/ckfinder/userfiles/files/zegixelevidebofijajepu.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/4190d372a2859806268f6983983c8a63/75799584597.pdfIn PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/sijonukipim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=and+so+are+you+meaningPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B2 10640 bytes
SHA-256: d064a22fd3cf4cce6d35a565f621f8c1189df412301d152648cc8546b4d436c0
font_01_sfnt_off000108d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D3 19136 bytes
SHA-256: 8d3bc4ac03fde4d3bdf2fc649c099b621628467e6a5d5a8a04d03654e3ac87cb
font_02_sfnt_off00013ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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