Malicious PDF — malware analysis report

Static analysis result for SHA-256 029974de5c3ccc20…

MALICIOUS

PDF

82.7 KB Created: 2021-09-01 03:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 32fc3cb07702e1af94f38b3d6c2e35a9 SHA-1: a57684adc96cd5c3b215419e851b3115d5c8869d SHA-256: 029974de5c3ccc207705598a91b1ee6e498a1b022b687e6adcb490f04177b4c8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to WordPress sites utilizing the 'super-forms' or 'formcraft' plugins, suggesting a link farm hosted on potentially compromised infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further malware. No scripts were extracted, but the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/7d66a57c215c32998c26e650804af689/fisigaroriti.pdf In PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/eb2ba7fa291f70da98998e5b8c586bca/vurawibirodulotewotelesa.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5632658bf---raloderagizujogedi.pdfIn PDF document text
    • http://ambvet-trefontane.eu/userfiles/files/fesifipipafomixamijosagaz.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d6654c569---nukemarilofasoj.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/mawapesugipatem.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/60534628316.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/94f0f73dbc20343d68b683e167054148/vubetedawagaxugunojut.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/38449395220.pdfIn PDF document text
    • http://ivelinabozilova.com/userfiles/file/66194393540.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/linogidilumujow.pdfIn PDF document text
    • http://om-ar.com/userfiles/file/xefawuwuzemuwuba.pdfIn PDF document text
    • http://niezapominajkowo.eu/userfiles/file/sijotunodaxolekodulowan.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/14804455231.pdfIn PDF document text
    • http://akcihlar.cz/userfiles/file/tosopitifegonikefat.pdfIn PDF document text
    • https://bd-sokolovska.eu/userfiles/file/71126362592.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cb8fa50e675---mofebunaxa.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/59624950061.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609065570e9af---vibapotitidowawuba.pdfIn PDF document text
    • http://delve-cr.com/uploads/dotekumalusosemogoto.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5c3fa209d---tafimunatomivagagupuvi.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/xonugo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=zizek+welcome+to+the+desert+of+the+real+pdfPDF 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_off0000da20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA20 18352 bytes
SHA-256: bb23c7f0f3c512c76a13656311581fc621775076bd249949f17ce5d9ccf53823
font_01_sfnt_off000109bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BB 10984 bytes
SHA-256: 71058ffcdb50e5bbfa188a10c3413e2824e1d839eebf72d93989c5726927609d
font_02_sfnt_off00012359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12359 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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