Malicious PDF — malware analysis report

Static analysis result for SHA-256 8008bb4beed8990d…

MALICIOUS

PDF

69.3 KB Created: 2021-09-19 13:51:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e1d7c8be5a314a0e0154577c7958ef12 SHA-1: fff3c13d3cc19f5d5274ba0f022f808fd5a22075 SHA-256: 8008bb4beed8990d0b426bedcf6bf150d36fb27420554940a2cf23ae0c89a7fe
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains numerous external URIs and is identified as a link farm on disposable hosting, indicating a likely phishing or malware distribution attempt. The presence of embedded URLs and the nature of the heuristics suggest the PDF is intended to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4336

Heuristics 4

  • 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
  • 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://medvor.ru/uplcv?utm_term=rooter+gaming+app PDF link annotation
    • http://tznjl.com/userfiles/files/puwafonebexofapoxex.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/luxet.pdfIn PDF document text
    • http://yasairamenbar.com/uploads/files/kopevowiv.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/s919nstb6vai6hmaf6mljp1rs9/11023113481.pdfIn PDF document text
    • http://www.rupankar.com/fckimages/file/15257182904.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/tljvcb4tfbrbml8e8bfnt3rsn7/96052318496.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/musesivixaloxelasig.pdfIn PDF document text
    • https://citytrafik.nu/images/file/tufem.pdfIn PDF document text
    • http://vititanon.com/user_img/files/58168955219.pdfIn PDF document text
    • https://kalashad.com/userfiles/file/tinirulaxepisogalamumev.pdfIn PDF document text
    • http://citysoupsbellevue.com/uploads/files/39442483303.pdfIn PDF document text
    • http://dbexpertise.fr/catalogue_dynamique/file/48303822455.pdfIn PDF document text
    • https://angelsforwarriors.org/userfiles/files/fewakufu.pdfIn PDF document text
    • https://ecoquimica.cl/dinamicos/uploads/file/35126504731.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/nivujipizexugi.pdfIn PDF document text
    • http://cga82.com/admin/File/28989332258.pdfIn PDF document text
    • https://mamap.in/ci/userfiles/files/mofigu.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/77284438179.pdfIn PDF document text
    • https://www.q-jin.ne.jp/ckfinder/userfiles/files/jaxewefu.pdfIn PDF document text
    • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/77879109520.pdfIn PDF document text
    • http://study4student.com/cache/fck_files/file/teromajoj.pdfIn PDF document text
    • http://foodchemsino.com/d/files/paxize.pdfIn PDF document text
    • https://035620126.tw/upload/greenkitchen/files/gusojisutu.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/temeramulavekozerusetadu.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/padixujeretinirireso.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD21 10424 bytes
SHA-256: ae2cf571f635e275bcadf3e2e84716eb593e868b61b20b0eeb0c9ae05a301b30
font_01_sfnt_off0000f4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1