Malicious PDF — malware analysis report

Static analysis result for SHA-256 62332193b7680897…

MALICIOUS

PDF

89.3 KB Created: 2021-09-04 05:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: b7ce5e093204ea06fb4f016e6d4916ca SHA-1: 30f9ded604cc56d4b4b1ba0b26d3a1fa90dad1cb SHA-256: 62332193b7680897f32734086e6d3a9ed998cd403351a82df53040bd09de8cd7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting it's used for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself facilitates redirection to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/dd9a7dd136d236dda3e63e23346fae1f/82968573306.pdf In PDF document text
    • http://arcenevents.nl/site/upload/files/1942000658.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa7969bce4---nulovisezegibajija.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16083c475ca502---fusogujerimemal.pdfIn PDF document text
    • http://maasmartcity.com/userfiles/file/14731142920.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/4352356016.pdfIn PDF document text
    • http://aimic.com/userfiles/file/61408399483.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c12868a30---96066851683.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8619368e4---tuzobulod.pdfIn PDF document text
    • https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/basovopiganimisepabagikej.pdfIn PDF document text
    • http://jingluo.net/uploadfiles/files/29836909940.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c64c708af00---bapalawarotezapuj.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/5d2bb2870d90f8cfbdbe90151c47f41d/38516287151.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/79122599148.pdfIn PDF document text
    • http://gfb.it/upload/fck/file/11364923628.pdfIn PDF document text
    • http://dekobonner.de/userfiles/file/sokanelip.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/86c8f7957410818d77d9bbc6ea0a608e/37336097529.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/nezaxibitibiwamir.pdfIn PDF document text
    • http://chieucoingason.vn/files/93596174848.pdfIn PDF document text
    • http://andrewclaymonfishing.com/clients/a/a7/a7b0d980ee28df7184f998a87a00dbd5/File/xuludijuluk.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/2ldml4ldhpm44ugsblkuros06d/19778759600.pdfIn PDF document text
    • https://digireg.es/upload/16894718542.pdfIn PDF document text
    • https://gullyracing.it/admin/ckfinder/userfiles/files/95714443802.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/h6i7archroivbhib3res67g1gd/11532991784.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/mapabudufikiwixefov.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=converting+pdf+to+powerpoint+without+losing+qualityPDF 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_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 11320 bytes
SHA-256: 4d325926983f87a53009d8fc0f6ceb3144910642cbb6062d5c0c3d0ea39926eb
font_01_sfnt_off0001111b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111B 18148 bytes
SHA-256: ddbffc6a2758126c7434839a1f323c3dfcb03af2e915ee5b73e7a722759fe7af
font_02_sfnt_off00013f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F7B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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