Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa423abfbd6b6ac…

MALICIOUS

PDF

111.0 KB Created: 2021-08-17 16:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: c7ff7bd40155fd893fbbc7039b9b9a39 SHA-1: d31aaf1a9514157ca19baaf02b6e1a7b989bf708 SHA-256: 2aa423abfbd6b6ac864c12602ac2ac42e97b1e2a3b66e820761e99b53f5a62e8
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 external URIs pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate this file is likely part of a phishing campaign or a malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://drafthe.ru/uplcv?utm_term=direcci%C3%B3n+de+mercadotecnia+de+philip+kotler+8va+edici%C3%B3n+%282003%29 PDF link annotation
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9ec36f887---1592742027.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb0c723898---91170322090.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/d245c94bdd28974c4f13fc4933153378/76380063705.pdfIn PDF document text
    • https://777mto.org/contents//files/butolajuriposemaxomik.pdfIn PDF document text
    • http://grandbarnettfamily.com/clients/a/a0/a01b80d98e57c38af56892ab55e7d82f/File/43958448491.pdfIn PDF document text
    • https://ka-base.no/images_content/file/12263153905.pdfIn PDF document text
    • http://khmim.com/ckfinder/userfiles/files/87281075560.pdfIn PDF document text
    • http://notarbrazda.cz/userfiles/file/95224627782.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6bb58edf5---16484818551.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/1mvnjob02481jmgaejh1f8lm2g/77095766276.pdfIn PDF document text
    • http://allasclub.com/campannas/file/42717249407.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/954cc3ff361102d5ffb022e986af1862/doren.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/c0799c00757828bb52929b13969a6ffe/rodosaxoxobo.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/49304030847.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160be6b893f567---keresebazoguxikezu.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877b344eec3---zekevaduzidubalidopezewab.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/10607736387.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/729341653.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97f5eef880---samenekafejajimejabisofe.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/73745bg0tsvcqd6j7eo75eugn0/17004580973.pdfIn PDF document text
    • https://atputasbaze.lv/images/userfiles/files/xuxotukimuzezediw.pdfIn PDF document text
    • http://songhakbbq.com/uploads/files/lebivujexijujuto.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e76692956---girobikinuruludoviserogo.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_off000146fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00015f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F0D 18796 bytes
SHA-256: aaae42cdd059016c8036b3cc05a4a877ce79f8109a463ffa69ad5a3d2e3ced7b
font_02_sfnt_off00018f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F99 11684 bytes
SHA-256: 5886d94f5d33c062a7fad78d89214aee2a8c693be7b65a529654cef8674efd80

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