Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab64a840ffba67f…

MALICIOUS

PDF

78.0 KB Created: 2021-09-24 09:43:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 6acb508f8ec77db136375835c9c2d111 SHA-1: 76e96abd6351505ec594f89ae1311841f0097f00 SHA-256: dab64a840ffba67f5a3607c4e8dcc2bceb580e1f8f8a44893852140e1cba96f0
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, designed to lure users into clicking malicious links. The presence of multiple external URIs and link farm heuristics strongly suggests an intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pistant.ru/uplcv?utm_term=how+to+download+shahid+vip+on+firestick PDF link annotation
    • https://stabiactiv.com/userfiles/file/46081975628.pdfIn PDF document text
    • http://lorichphoto.com/pictures/file/giwevobowinekofeb.pdfIn PDF document text
    • http://uitvaartverzorgingsindex.nl/images/uploads/xubowalijemidepelejodigeg.pdfIn PDF document text
    • http://www.kotolantopeni.cz/files/97523730324.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/17954849351.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/jetixo.pdfIn PDF document text
    • http://lpsa.cz/userfiles/file/dapanixagorof.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c8c412d109---18912847445.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/88619713377.pdfIn PDF document text
    • https://h1t-url12shio-turbo.com/contents/files/47118053173.pdfIn PDF document text
    • http://p-itos.net/admin/userfile/image/file/31376012223.pdfIn PDF document text
    • http://fivelscope.net/fckimages/37430305041.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/7f7dcf617579296b2289aa377832bc17/4537050815.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/mowevukofodosidizasi.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/dumbf1qfd4c42m0nvs6r85pv05/31799756767.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16136ff9c7f14e---xutadelovafadepewenalone.pdfIn PDF document text
    • http://fisioterapiasuzzara.it/userfiles/files/14964855951.pdfIn PDF document text
    • https://togeltop.net/contents/files/lamofupemudebazadatax.pdfIn PDF document text
    • https://vadihosting.com/calisma2/files/uploads/30624934299.pdfIn PDF document text
    • https://rumusjitu.com/contents/files/ruzofinemosukaxus.pdfIn PDF document text
    • http://phayaotechno.com/UserFiles/File/xixoridivaloju.pdfIn PDF document text
    • https://wolfgang-photography.com/userfiles/files/giborof.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/jawulelorusizus.pdfIn PDF document text
    • https://sealordhotels.com/ckfinder/userfiles/files/korexozotokenogu.pdfIn PDF document text
    • http://mlight.cz/archiv/file/54095613861.pdfIn PDF document text
    • http://fohow77.ru/upload/file/dijuminodogugarajelu.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/31091573818.pdfIn PDF document text
    • http://www.huntsvillepr.com/files/files/woxisemibogo.pdfIn PDF document text
    • 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_off0000ca38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA38 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e24a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24A 17588 bytes
SHA-256: f083e04861d9b5091d8f433a6212e48aaa16607e7a79507a07caa46fe9bbd206
font_02_sfnt_off00011034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11034 10952 bytes
SHA-256: 71fe2f40cfe733d86cdf80a116f61705c8514ff2ae1b2aafa568b66074a1fc23

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