Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a7720d2971e33b…

MALICIOUS

PDF

88.4 KB Created: 2021-07-18 03:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ed3f7a2107d4efccc26bc495cfd2ffae SHA-1: afc75171bd65750aaf2b15cc62319dca8ee8531c SHA-256: 64a7720d2971e33b3b07201e9b77a8fbcb8e1d4cd2b92d5d442fddd55c0cc5ea
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous domains, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' suggests links to compromised WordPress upload storage. These findings, combined with the ML and ClamAV detections, strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://innobiztour.com/FileData/ckfinder/files/20210626_95D7B793B2E41F5E.pdf
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/2f6672f3e3665b6669651e592c4cb225/59442253930.pdf
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/f2caf0eaaac554c5b8041905174fd5c6/94861929894.pdf
    • http://rld-carbon.ru/file/95480161231.pdf
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160958b252c3a6---rivumerexopivekudinifomif.pdf
    • https://kildevangen.dk/files/39957594374.pdf
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/zoxefunixorepaki.pdf
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/d69e796ffcfe82d047cc04cda7fa8aef/80339498498.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e824c84d51f---79234635027.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f345d8c7a2---30018173691.pdf
    • http://studiofantino.it/userfiles/files/jadapupo.pdf
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737242cbd20---46714553932.pdf
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7d1140bdca---49566480435.pdf
    • http://cambridgekapurthala.com/damana/userfiles/file/gupiwaleraxa.pdf
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/fba8fc8f22050af391fc238b0375768c/getafomapatuvewev.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/fb6fe43b2ec8cbfcb686933249260d69/sunenitenitoged.pdf
    • https://prosperitas.be/data/assets/file/22611536552.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b33d297e811---diraw.pdf
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985fba90464---wutuzizifez.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7be23ccabf---rizedavaneridarugozuvob.pdf
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c82ea5a04---mimedatu.pdf
    • http://esthebel.de/userfiles/file/sumadopumemawutunogoweg.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afcff48cd0a---90864955603.pdf
    • http://dogoxuavanay.vn/uploads/files/firilogamefusujomifigato.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=adobe+export+pdf+free+download+for+windows+7
    • 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_off0000f78e.bin
352e1e9e67a256d962a3cd06aebb3b3074898af55c48872e43e1c59f184ea476		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF78E 16708 bytes
font_01_sfnt_off000122e8.bin
b2a275ae7d3f73d3a14afa75f3aa656ef502a19e1da8a7813240fed863e98790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122E8 10848 bytes
font_02_sfnt_off00013bfa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BFA 16792 bytes

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