Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a2035345309650…

MALICIOUS

PDF

76.3 KB Created: 2021-09-21 02:20:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2cfaadc0d5e10a6c461247239efeb33d SHA-1: 9824402de43c9c8ba52a94ad7f106a0aba58eed5 SHA-256: 32a2035345309650fbbd5dab58b920e1135264866589f8a35d2295c3d87e7501
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://allytemp.ru/uplcv?utm_term=find+phone+number+by+telegram+username PDF link annotation
    • http://ccadl.com/files/20210904122920.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/walabekibuxifevakenap.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/94409668734.pdfIn PDF document text
    • http://vitalchurchesinstitute.com/files/file/51149048446.pdfIn PDF document text
    • http://maysoi.com/hinhanh_fckeditor/file/39242471632.pdfIn PDF document text
    • http://studiosantese.eu/userfiles/files/28657221618.pdfIn PDF document text
    • http://vino-charlie.cz/userfiles/file/36504064502.pdfIn PDF document text
    • http://www.eatvirukai.lt/uploads/files/75206895329.pdfIn PDF document text
    • https://thanaclusterwestgate.leaddeehub.com/userfiles/files/veroruxitas.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/43821c39df76a2ce991ddedbb3c70339/jikuvupaseda.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/79606412813.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/lotidumugufi.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents/files/potefomilakeses.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/56416954118.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16132e2be8c1e3---43082311134.pdfIn PDF document text
    • http://philipsphotographystudio.com/savujemukekudafogaj.pdfIn PDF document text
    • http://imcborivali.org/userfiles/file/funujofakusotevajeladebof.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/miredofijuwefutev.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/66823893378.pdfIn PDF document text
    • http://www.depomatrial.com/file/60361017074.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/pufidetavexodelixa.pdfIn PDF document text
    • http://captainkillmite.com/uploads/files/202109210616093039.pdfIn PDF document text
    • http://mhfmjournal.com/data/22/2/55/64/2544879/user/2788947/htdocs/userfiles/file/sotakefesexavunenogiwu.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/48706544571.pdfIn PDF document text
    • https://kamionosnyelvlecke.hu/userfiles/file/2758906216.pdfIn PDF document text
    • 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_off0000c699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC699 11172 bytes
SHA-256: 87694946861b5790b38b78a38349688e3ccb98dfec2b6e9fef1d489f8112cd03
font_01_sfnt_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 16720 bytes
SHA-256: 8999a4f55974ca697909029bf5b859d7282fd0b2b06bfb7658ddc1c9c6e4d993
font_02_sfnt_off00010ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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