Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e00ee6aac00d32b…

MALICIOUS

PDF

163.2 KB Created: 2021-09-07 18:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 06baecdffc58261226f9c5dfcd2a88d2 SHA-1: e5c562ad5f51163afc67c431d8e580a859e555c9 SHA-256: 7e00ee6aac00d32b6f3b4f49a6838b8db56bed61315994b2eff2250dfa0fcb19
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it likely exploits a vulnerability to execute code. The document functions as a link farm, containing numerous URLs that point to potentially compromised CMS upload directories. These links are designed to lure users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ccb53cca2---nuliteveji.pdf In PDF document text
    • http://kirilmazbardak.com/userfiles/file/pokemizotavizede.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c4cde6c6879---jexezaxor.pdfIn PDF document text
    • http://buergerforum-tirol.at/file/51653768332.pdfIn PDF document text
    • https://artenika.pl/fck/file/88188306869.pdfIn PDF document text
    • http://thebrownbag.vn/upload/files/48786124094.pdfIn PDF document text
    • https://lesfeesdelhetre.fr/upload/files/nipafibewujanus.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/ghvj6cs1861p77lpfbdct8d3rj/zufalirudexujazivu.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/d19614261ffa4c3e3175cce2933cbfe8/10398007486.pdfIn PDF document text
    • https://subarini.ro/mm/file/2710469056.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160fa736f15562---bunudetilobisapiluzugofux.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/41511454336.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/3a47888691e52bdb7ff6338372049021/bojutifol.pdfIn PDF document text
    • http://trlgpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wivom.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/nv0sq2n6c4lhdu715id5110vt2/totatopod.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/23464939627.pdfIn PDF document text
    • http://mientrungland.net/uploads/image/files/vupesujazikanuseraruj.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/d68c8313fe51a59552154de8b9c3ea54/lefomitumodelawuwuk.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/97442794403.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/baxabekak.pdfIn PDF document text
    • http://stin-verdon.fr/assets/Image/files/jigelumowisizutu.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/128a0f8a7ccfe33ced6052495175e053/jufebanapiwuneliminetan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=the+shawshank+redemption+pdf+scriptPDF 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_off00021c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21C50 10980 bytes
SHA-256: 22e470c31826c6518d13042072eecb1499b20e89cc8f4d16de5acc7c2d54568d
font_01_sfnt_off000235b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x235B1 18864 bytes
SHA-256: 61670f21b37096791e293246f04b3858778aca63d4f977ce78fdbecb948cdd12
font_02_sfnt_off000266c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x266C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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