Malicious PDF — malware analysis report

Static analysis result for SHA-256 a78c222f4048451d…

MALICIOUS

PDF

81.9 KB Created: 2021-09-07 22:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 5fcef5eb2e6083915dbfe7fb1abbf6e3 SHA-1: a17fc64b77ed4e384fc4b7a07078183d0f61603b SHA-256: a78c222f4048451d55bbf4b94efa8d7bee6233a7aed4f776c39c4afb09e7cdec
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to websites hosted on compromised CMS uploads or disposable hosting, indicating a link farm designed to direct users to potentially 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 0.9960

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://nicolalazzarotto.com/userfiles/files/zosogafemebakezumetinumo.pdf In PDF document text
    • https://transmar.biz/ckfinder/userfiles/files/jupavew.pdfIn PDF document text
    • http://www.euro-fly.eu/userfiles/files/14034849514.pdfIn PDF document text
    • https://orderpoet.com/ckfinder/userfiles/files/14002417718.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/tunoxibirawe.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/f50436bcbfbca1ce3f63d249795ece45/jewukipavajetudone.pdfIn PDF document text
    • https://semagro-msw.ru/pics/images/file/95255805422.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/e94b95f413728a3c78ce71d10dc20f3b/66510900429.pdfIn PDF document text
    • https://steammining.com/userfiles/file/bejetibajupimul.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/cd7816b1a2b42e436148de4b7b3ed1c0/sobapumebisatekesetibo.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16087a7b31fa89---86329477417.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/siwanusijexosafi.pdfIn PDF document text
    • http://izhar-energy.com/userfiles/file/81333470683.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16107305a4dafa---jawipexuravugawoni.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/ed3752cd3af48d09749bd91cb5d68934/6649567523.pdfIn PDF document text
    • http://dogalakustik.com/depo/sayfaresim/file/pizasum.pdfIn PDF document text
    • https://cfacgroup.com/uploads/FCK_files/file/95189739419.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/03gni6dnp4vs0aub7c0ivrln80/sufafobazaxubezosedik.pdfIn PDF document text
    • https://gulfsupremesa.com/ckfinder/userfiles/files/15164897809.pdfIn PDF document text
    • http://ceskylakros.cz/userfiles/file/61985824624.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c38cd466---rawovogovenisap.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/742f248410f00f9aa45edd638b9b0a46/renikorutuvumonoliko.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/bemotaxuvujenagug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=william+blake+songs+of+innocence+and+of+experience+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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFED 11192 bytes
SHA-256: 26e020b4d315743d148bfee180dd296bf83c15e8e1c4e50eb1c83b5998283ddd
font_02_sfnt_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 18564 bytes
SHA-256: 2d90c17460e627ee6c2e3b1da643043ce0a85c52c2633e55535e8b9febb5aa00

Open this report in the interactive analyzer, or submit your own file for analysis.