Malicious PDF — malware analysis report

Static analysis result for SHA-256 feabfa59497593dc…

MALICIOUS

PDF

80.7 KB Created: 2021-09-01 19:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c014a4719b8001e6377fff9514ba1534 SHA-1: 32ecb5857abde127831d93f48810cc09cc0a00d2 SHA-256: feabfa59497593dc09501ff0283dbd86826d83b90be810fbe2c81cd2a7f5d307
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs that point to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://philabc.ru/uplcv?utm_term=harry+potter+7+online+free PDF link annotation
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/kqmvtlifavp3tkn5rsno1ha2i0/33368138761.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/bexabimotelomegajimolabad.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609aa08c45e6c---sijekefasaxozigekivisala.pdfIn PDF document text
    • http://qazaqbanki.kz/data/content/files/badigifuzomuvisilituw.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/d6ec091ba382ed33259b325e98d6ddd3/80332254687.pdfIn PDF document text
    • http://studioindelicato.com/userfiles/files/fuxekekibewa.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/bbb66ed46e05c81aaba0d8a1f1261ad9/bitajaxuredafinaf.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/538ac8da95ffacbc3fd5052fcc4a2456/nutip.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/83062327475.pdfIn PDF document text
    • http://brianhaymore.com/images/e/file/45642794439.pdfIn PDF document text
    • https://yuss.itfile/senuzegeximixo.pdfIn PDF document text
    • https://tootooair.com/FileData/ckfinder/files/20210718_A8756547FEAA3D55.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/bilovovimokomoguwovo.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076c2f570ae1---ziwufosixubapiketubo.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4dad3e6da---gidera.pdfIn PDF document text
    • http://nirmalamathachurch.org/cms_uploads/image/file/xuzekugititex.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084b8723b180---nuvuxuxiriro.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/50227482224.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/metomaxikopibetezuvivixem.pdfIn PDF document text
    • https://preciseenergygroup.com/media/gedazemomaz.pdfIn PDF document text
    • http://prosquash.by/data/22959478975.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_off0000d85f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85F 10336 bytes
SHA-256: 2d76bfd8759619ab0206cce6260259735dc471634528ce27b223a1c20e1e656d
font_01_sfnt_off0000efce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000107e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 17552 bytes
SHA-256: f61dd5ecf4cc7a3771fa8a41d74d8ee27226fedea86ddf77d8ab6bb71b68c93b

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