Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee918d6a4f8b7f7b…

MALICIOUS

PDF

84.8 KB Created: 2021-09-04 00:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6ea5b6421bbd12e4c19c2bfa1b6a808b SHA-1: 2e83f4715e0876321d7a3b6e4270da980b122623 SHA-256: ee918d6a4f8b7f7b40ab8aaa639b6870194031685fb0dbcba267b77f19049cb8
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9109790b56---96376851735.pdf In PDF document text
    • https://anthonygillant.com/userfiles/file/35399769578.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/c9bc3ac38345ae1e02c15f0bece4968a/56032391961.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081cb3b14022---58401693839.pdfIn PDF document text
    • https://bloomlight.pl/_bloom/file/sonulejosa.pdfIn PDF document text
    • http://ebiocell.com/uploadfile/file///2021071604455029.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/l5ukpb74ap1rab9p6hnnreru34/34584287989.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/31184272699.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a015f578209---jafuvavuzikisaw.pdfIn PDF document text
    • https://johanbjerke.se/userfiles/file/gozesasifesat.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/2539305526.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/auvbhk0c2r8ndj0rundtuvise6/28143992754.pdfIn PDF document text
    • http://hongdacable.com/d/files/10351713409.pdfIn PDF document text
    • http://altus.pl/userfiles/file/72311848161.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/5e5753a0d269a3d0a95dd404722d9cef/vuwoxukamunubufigagokaw.pdfIn PDF document text
    • https://sitarasign.ir/data/file/xomotulatowufopof.pdfIn PDF document text
    • http://sistersaviopublicschool.com/userfiles/file/5954337972.pdfIn PDF document text
    • https://charteriraq.ir/basefile/charteriraqir/files/80714780930.pdfIn PDF document text
    • http://rund.cz/UserFiles/File/52749230616.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/gukiwokafotetobuzokit.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c0317e32---zadavewojasi.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/miruwakozijipegewo.pdfIn PDF document text
    • http://cedule-plachty.cz/files/file/81128302202.pdfIn PDF document text
    • https://panama4d.com/contents//files/xatapajazotaxa.pdfIn PDF document text
    • http://blueyee.com/upload/file/301902189161.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e4331c6fe---51972111512.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=philips+avent+4+in+1+user+manualPDF 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_off0000e5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C0 18112 bytes
SHA-256: a2c254fccc4a44918bdae59339c458cfbdf2ef042cc5f27dd89ec13d5a22320e
font_01_sfnt_off00011520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11520 10696 bytes
SHA-256: b15be30992335486900410f1d1a2262bbaf05c87db117e047b60b2353e03c81b
font_02_sfnt_off00012d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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