Malicious PDF — malware analysis report

Static analysis result for SHA-256 9801bc45f8ed6803…

MALICIOUS

PDF

81.8 KB Created: 2021-07-21 23:58:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: bc02942c13dc8cc01d175787f5eb319f SHA-1: abe0f8da08b42b39d9ad59968c2889a171bb61d8 SHA-256: 9801bc45f8ed6803084eab0db4a3f0be9f5ffb4403575dd1441e3a8701da9d79
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, likely intended to lure users into downloading further malware or submitting sensitive information. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cherrychile.cl/cherry/uploads/contenido/files/72439899742.pdf In PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/2a96af96d21be45a31d8b185f10e77df/tamitonuvo.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec0de451cc---9517505346.pdfIn PDF document text
    • http://agama-rc.com/upload/files/61094526096.pdfIn PDF document text
    • http://kolasinprevoz.rs/slike/files/gisozopabe.pdfIn PDF document text
    • http://burnettefamilyreunion2021.com/clients/867108/File/55558693122.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/vabakejomebetalesop.pdfIn PDF document text
    • https://ntwbearing.com/UserFiles/File/dedanosatogexujo.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f3c27be43---80714461602.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/noxezamopim.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e621097f7ec---55187739052.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/5qfveargtqhqar5biqg7l22qu1/refaranemejagodinasab.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/2529982858.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/munuzajaribegigakugut.pdfIn PDF document text
    • https://argumentua.com/i/file/37094422561.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/25475145963.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/8vtv5ib9g0vcgcqtn29l38i2om/juzudalamulaxarabopaxefo.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/047722192dc45949cc6e4ecbc350a868/punajisuzipoku.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/42979211049.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a616e2b5b69---valumumijanaf.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e179786e5---97945527020.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=the+compounding+pharmacyPDF 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_off0000dcfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFE 16772 bytes
SHA-256: c558386e322fb67c47a239da860b463535560e92e5242b5b2d6cd7d326c25bd5
font_01_sfnt_off000108f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F6 10824 bytes
SHA-256: ef502d4b3923c38321b3e030c20d73d9d6b05a31e0aba5024f66ae6ef1444789
font_02_sfnt_off0001217c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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