Malicious PDF — malware analysis report

Static analysis result for SHA-256 a461ed402aaa6b51…

MALICIOUS

PDF

82.3 KB Created: 2021-09-23 05:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: d1b5cc7f4564e3cc35c5437259c8e70c SHA-1: 79ed58eefb1f3c6947f234356d6e5d52d860137d SHA-256: a461ed402aaa6b5154d8994aeadd4b24c5e6e39183eab95340d2e8ce518fa15e
156 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to lure users to 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 0.9951

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://archism.ru/uplcv?utm_term=parasite+full+movie+putlocker PDF link annotation
    • http://amdind.com/userfiles/file/22764646117.pdfIn PDF document text
    • https://lenaoyunlar.net/calisma2/files/uploads/46658030959.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16142f62df0b69---52227004563.pdfIn PDF document text
    • https://vico-immobilien.com/ckfinder/userfiles/files/60941797908.pdfIn PDF document text
    • http://annabarons.lv/files/files/wuxijumejavu.pdfIn PDF document text
    • https://footballsod.com/images/ck-uploads/files/zetibi.pdfIn PDF document text
    • http://kaie.org/userfiles/file/20210911202314.pdfIn PDF document text
    • https://ariaparvaz.com/basefile/ariaparvazcom/files/dufasipuwuxufazesiba.pdfIn PDF document text
    • http://randoquad72.fr/userfiles/file/sajivivivutufukin.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161456f01ef8d7---59473530359.pdfIn PDF document text
    • http://scsytech.com/upload/files/44145291902.pdfIn PDF document text
    • http://yanartekstil.com/firma/files/92731930155.pdfIn PDF document text
    • http://xn--80aamwn.xn--p1ai/userfiles/file/89699726470.pdfIn PDF document text
    • http://pozitron-s.ru/userfiles/file/xijutipez.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/pijeteretuk.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2b8d562ed---28023821363.pdfIn PDF document text
    • https://iword.de/userfiles/file/87929594041.pdfIn PDF document text
    • http://koreaticketland.com/userfile/file/21840091972.pdfIn PDF document text
    • http://www.jasfec.com/imgs/uploads/9865004161.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/rewezasexuvimow.pdfIn PDF document text
    • https://regiefranchet.fr/userfiles/files/66415627396.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/ruminisurepuvoxujelufi.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16148122299f5f---jubanalalunobawixotujova.pdfIn PDF document text
    • http://trevelci.ru/ckfinder/userfiles/files/19612131381.pdfIn PDF document text
    • http://gyndoktors.de/ckfinder/userfiles/files/zafurelolikikepigusikax.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_off0000daa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA4 18740 bytes
SHA-256: 6c7622331d40c225133e46376f315d0d6394fb8e963ab4fa88a8e683f6311b7d
font_01_sfnt_off00010b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B06 10796 bytes
SHA-256: b02cb2ace63ddba4ef20eace05669b1aad4951e7d329beac42199bd5b86625ab
font_02_sfnt_off00012405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12405 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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