Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc06c2ed2bddeb80…

MALICIOUS

PDF

87.2 KB Created: 2021-07-09 08:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 8016c32545060e967aa8327b5f8cc5b8 SHA-1: 08360511c4a8ab554f6127e2b3918d1c9a75a7a6 SHA-256: fc06c2ed2bddeb80cc6c0c58f823c6ab0ec5f9ba13409b16d79296eda1aa20f1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads and disposable domains. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm suggest a phishing or redirection attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9765

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://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/31428146190.pdf In PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/f96d78b375b5af626ec0fdbda71f7f19/ruwoxujibakakawijeguligeg.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/57592905142.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/85259309622.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607811102f66b---25960352849.pdfIn PDF document text
    • http://veronikavilla.hu/userfiles/file/pezupavofexuvi.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/e4bde103a9fa36792d699678cea962da/sumixiliredugilik.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/97312024089.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/jorajuzaz.pdfIn PDF document text
    • http://ivepe-elearning.gr/assets/UserFiles/mainHome/file/dibufazojel.pdfIn PDF document text
    • http://anma.pl/anma_edytor/file/zeledezugenujufo.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/20574083520.pdfIn PDF document text
    • http://keralabiblesociety.com/fck_uploads/file/12462569808.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bada5ecc907---33688767959.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/d2c0d7ee9f16ece3c9fea52a9f9809a4/fapej.pdfIn PDF document text
    • http://pune-india.info/userfiles/file/55340729858.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607570c958a51---wamakakusofibe.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c308d645b3---22487759911.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/9dbebe3a567735fe90149cce4d2a50c3/9200796717.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a24160a39d7---93086316255.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16096ab72c81a8---digagedizovin.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/9b72b6c1be8b70bb7ad4eb52fd97efea/55477429011.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f38d33368---timenazik.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a32b2eaf2---sokarubib.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/xomapezubuz.pdfIn PDF document text
    • http://mxm-hosting.nl/img/editor/file/52090540462.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=his+mate+and+his+mistress+rise+of+a+luna+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 10856 bytes
SHA-256: 89a5254ce9b795d5d214204f47a6839a0b9ee9e1dca731f13969a26eb6594192
font_01_sfnt_off0000f529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF529 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3A 16344 bytes
SHA-256: e246984ad5c158f46ad2884b64d0e6624bacef7713ba359f08a13fd54ffb3325
font_03_sfnt_off000123b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123B0 16884 bytes
SHA-256: 057681a38b09cbe4ca573dc7b6168fd3dbd6f70f81fbef2f47c2490a5fe16bd0

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