Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf1598973944843a…

MALICIOUS

PDF

83.1 KB Created: 2021-06-29 14:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8e7bfadc5d1b678ccca57c32df5d2d44 SHA-1: 4a32e5346dc1809509742eea2fc16797dcec5f2f SHA-256: bf1598973944843ab7876ba6b0a3a2540c33e039651045318aaf47535cbc01e6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the nature of the heuristics indicate that the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://allytemp.ru/uplcv?utm_term=contract+is+terminated
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/wapiluwabalulanizad.pdf
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/4c863e73c3644ec1a904044f68ebcf7f/giwobusixoxo.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d85b345b24a---3474579512.pdf
    • http://aceonlinementors.com/userfiles/file/fupitagopa.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b918e096fa9---pubikuzip.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/125b52020a9a18880bb121a321a23953/xuxijalimepogugewatexax.pdf
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c47b4360268---fizamij.pdf
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/xibelodopesaxutufug.pdf
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/5df470aa37e41dda360c595403a2b6df/sogutipudulobopit.pdf
    • https://marljivo.hr/userfiles/file/nawejuxu.pdf
    • http://aiskreunion.com/clients/b/b4/b417c2091670ce0b0d78f4b231aea02c/File/rosuxosokogawepojagavew.pdf
    • https://cabsfromheathrow.com/userfiles/file/jokog.pdf
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/4fb4b8dd3e48b6c831d4bef0be9d8d70/87553952804.pdf
    • http://eventologia.com/userfiles/files/jedepodozot.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609adcced6512---fafeximutapinuvub.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd8c22c56e---67606670437.pdf
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9c9a19018---98567795672.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/8fbvlm5ivfp1khntq5ki15ohd4/sufapiti.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16089a00cd7302---wutajikipivupelulev.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ed5b29215---zetunejoka.pdf
    • http://primebrokeragetx.com/ckfinder/userfiles/files/pavevamoginuvo.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/f61k1mh0jckn985tqogomne964/powiliniwiloridazogizopog.pdf
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/jt5dpl9eir1jn9obaomj26dni6/24778922106.pdf
    • http://3dsami.org/uploadfilefiles/kobadexuweboba.pdf
    • http://plncse.hu/php_data/file/3696350281.pdf
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/5e7f3trm44l7aeu9uma4jnmbqb/fukevijuvulivuz.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/k8nj54u1ppgstqi8b9cij3qg6j/16442658941.pdf
    • 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_off0000e5ee.bin
daa96681c7086483d943996e18faf07693a8500ff624ca8822e631fdb105ee21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EE 15956 bytes
font_01_sfnt_off00010f35.bin
994a01bf0eb7291fe49087695c672c5d7c96bace6881e28c22d999fecfe6ca59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F35 10516 bytes
font_02_sfnt_off0001272f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1272F 16792 bytes

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