Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c0d01eaf60085f…

MALICIOUS

PDF

101.8 KB Created: 2021-07-09 20:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 01f2d80c8ed6e59ae86dcffb5033eedc SHA-1: 51092138d44e994c33e25758ab1558a477f9cb98 SHA-256: 52c0d01eaf60085fcd30bee3a9d2606816ffc908f56427c0817fc6f499472194
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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 http://www.sudaff.com/pics/file/nelusofewe.pdf In PDF document text
    • http://cuatro-pr.org/sites/default/files/file/79136940380.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/togetelikonobonotebapeka.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/428a462d36494dd2ce3c1948bd35438b/deliwuwogubijud.pdfIn PDF document text
    • https://aicpwdosaeast.com/ckfinder/userfiles/files/70374767873.pdfIn PDF document text
    • https://bmw-zona.ru/uploads/file/mepetuxavosimojigo.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/9271946062.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/660c06053999aed0302fa77215b10660/99514791231.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/29245395549.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/juxopugajigi.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/d5bdd589a36b3864933a4305a17b7ff1/5668051894.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/jeregipavevoneno.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/19216920377.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/6f3261952d24ca36331e82b6df38008c/nufebiviwenabufegepe.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/d383ba0cab1266e422c83f2784abd12c/96456139396.pdfIn PDF document text
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/4lqck3moh4pbrr7cgiublqvqoi/21238620465.pdfIn PDF document text
    • http://markone-tools.com/upload/files/gidupixazedobo.pdfIn PDF document text
    • http://sllight.ru/design/img/upload/file/70792578551.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb9d86bf01---lewesuzimilan.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ce1ede94956---61933445368.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/labaloz.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1608f03fbbb1c9---pidasadefedukuza.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/5972d1ad0247432c5947ab9151bae685/sunixubirok.pdfIn PDF document text
    • http://ithaca1962.com/clients/41687/File/15311820392.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/d0ade058060af86c1e8cba603aab261f/78070328402.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/3be246adbe4036996531772da37b6014/bagosarudugotafuwoz.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/50512516900.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/teruzizigiva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=plants+vs+zombies+level+guidePDF link annotation
    • 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_off00012d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D26 10860 bytes
SHA-256: 7eca67b31be599f7c515629f218e30186fd0b1dda3724fca33e930900943ca1f
font_01_sfnt_off00014611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14611 16696 bytes
SHA-256: 3724892c5ca2fb5ae1198029ee6fae21c0a5b35095046fe9c28d844aed5d1608
font_02_sfnt_off0001716e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1716E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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