Malicious PDF — malware analysis report

Static analysis result for SHA-256 95abeff0063b190d…

MALICIOUS

PDF

95.1 KB Created: 2021-07-21 14:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9d3b0c96b4201a38320cbcddf3ece86a SHA-1: e652a7e4996f0226dc39e18eb846b805c4b6a374 SHA-256: 95abeff0063b190dddbdcfdb916303e9d57c1b6bf5fd9339c5f6c3e2a1d34575
156 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous links pointing to compromised or disposable hosting, indicating a link farm designed to redirect users to potentially harmful content. The presence of external URIs and link farm indicators strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://camgloberealtor.com/userfiles/file/18776556004.pdf
    • https://castel.ro/userfiles/file/68449894456.pdf
    • http://afgventuregroup.com/cfiles/file/wutexosezirereje.pdf
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fdff165c1---liraxepa.pdf
    • http://teakdeck.pl/files/file/nesakojenavisapimunisibap.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c75208ce5c8---11680584497.pdf
    • https://aymexco.ro/ckfinder/userfiles/files/fejugu.pdf
    • http://erpsamik.com/ckfinder/userfiles/files/79804352628.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083da2d49ae9---75017465114.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160845adeeb6a1---86666637299.pdf
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/s1vbdtrpfji1da94gda0m6qlug/koxopowojiwemuxabozeroso.pdf
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/vg6cs9tkv95i6a095j6ik9pq7e/88124316257.pdf
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//jesipevoposijix.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/c491dsmk7g33p1j0um22gv1o92/89494698810.pdf
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3fd7bff9a---94266872624.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/6bbd1bef1c13ca4e108e1c38a317a962/jupaziziwukakokufumexobeb.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607caa08d1534---20501844966.pdf
    • http://liubeauty.com/luutru/files/semobivesawugege.pdf
    • https://www.haievent.com/wp-content/plugins/super-forms/uploads/php/files/1d9qj2nasrebes9vrvor9htbsd/bizunoxapububunep.pdf
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096687039bf6---fimobagobonokani.pdf
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160adaf3e9066a---paluseparipubukiwi.pdf
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a34c472c43---luloz.pdf
    • http://phantasos.org/userfiles/file/dizakanepujuramosadanol.pdf
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/xubeso.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=nurse+practitioner+interview+answers
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fad.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAD 16792 bytes
font_01_sfnt_off000127bf.bin
157820839b5b58255fadb2010130ea9f18f7df9da06a4cced3498f667513fd88
pdf-font-stream PDF embedded font (sfnt) at offset 0x127BF 17728 bytes
font_02_sfnt_off000155a2.bin
d5da311a73b8823b1cd1a18d3cd4add9c7c4bd3e2e2ae3fc0ec7436eedc86348
pdf-font-stream PDF embedded font (sfnt) at offset 0x155A2 10552 bytes