Malicious PDF — malware analysis report

Static analysis result for SHA-256 b797f57ba68922d7…

MALICIOUS

PDF

80.7 KB Created: 2021-07-16 22:06:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 39276b16436ed661f998ac7c06de63df SHA-1: aa222ceee5b9ac8aa437465258b401d9e0b4bf33 SHA-256: b797f57ba68922d7400f9f095c92a8852bc3a25d50566975d49085a817a7c39e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is detected as a Trojan by ClamAV, indicating malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The PDF structure and embedded links are indicative of a phishing campaign aiming to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3518

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
  • 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
  • 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 http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/aec3377fc6a6d9e966e4133c1ec3def9/madomoxedibopezodini.pdf In PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/lqvr1kb592n5cmiffeh85hia47/zedix.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160a85791d6928---susivaze.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/zarejuneretaredup.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16224076803213.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11e1a961a9---64892710764.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/16289286370.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7ffca5eb7---13641746041.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160775c72adbb1---93058365462.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/iqqh6t8ak835mqbjoeq282t7tk/42880715307.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c18a8f2209c---21133982760.pdfIn PDF document text
    • http://dungcumaymoc.com/Images_upload/files/wuzemibifitisenaw.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/5dobimjni7bet2vtb9875579o0/noziwedewobajebex.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160be7694d7e3f---bewuran.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/sarijafodeginasixugu.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098fd56c1b7e---geralirulakanijomer.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a24a061d1e7---76912187067.pdfIn PDF document text
    • http://emrc.ie/upload/imagecontent/file/84871557050.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/699bf05d7ce2797b625b165b04f0453f/32371361016.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/17735082373.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/225b935014ecc1efe68bf174d4b8b38a/61089398426.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/5u1jq9j83ni0eg7r6h01su43v6/20414984485.pdfIn PDF document text
    • http://helderlive.nl/ckfinder/userfiles/files/bedokanejeravivoxis.pdfIn PDF document text
    • http://andreaslasnik.com/data/files/viwubajakofezewewomubumow.pdfIn PDF document text
    • http://klefmarken.se/upload/file/gadopawu.pdfIn PDF document text
    • https://arerp.kr/data/file///65087805784.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=management+as+an+art+science+and+profession+pdfPDF link annotation

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