Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9d7d0bfcd41ca2…

MALICIOUS

PDF

103.7 KB Created: 2021-07-09 06:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 57806f4eb0397e03f0fb70dba9e2489c SHA-1: 9c565a8b90a695141336262fb9d4f26854939b19 SHA-256: 9e9d7d0bfcd41ca257670fdf039011e1a506615ef5c2143ab2d42deefb87ceee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains a link farm pointing to multiple compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/cc46e1abce5145063e95d2f52a0bbea6/divaxumukajanib.pdf
    • http://askort.pl/Upload/file/zeguzizaloxuwatopute.pdf
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160755ffb89e68---pewupakejofu.pdf
    • https://rosycaffe.com/file/48739092130.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/d64bba92d6602f4c337690ccc99be68f/78512736710.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/6b270ac03c055b56b6d2e8e6e92a3aff/kametif.pdf
    • http://septumdent.com/img/userfiles/files/30129855028.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3982ca2ea---13393840532.pdf
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/9hadjccno05k1hfidufjb9mlt2/39547015994.pdf
    • http://sintellect.ru/Repository/file/18076047420.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/i72emk6sok8e9nft3tr6dr5o18/jafujoxagelipaxuxagine.pdf
    • http://j-line.ca/fck_upload/file/pujutumi.pdf
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/abgr4ifevgoa5959a16isc6pl4/33987854016.pdf
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/zajuli.pdf
    • http://dtcguild.org/clients/80367/File/43099238232.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c26182946---keregorurizikugok.pdf
    • https://standardpromotion.com/images/upload/userfiles/files/35143971140.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/199bb87e763340f5b308b028d28d498b/zuxuju.pdf
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/59l7mvdue40fva690hutrtb0e5/16445637598.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786f321b226---94573930751.pdf
    • http://kokocurry.gm/userfiles/file/lusalatuzidot.pdf
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160bea842a4a6d---28371442958.pdf
    • http://phs1961.com/clients/2/29/29da8dc1278d8f1c58a3d16208bcb4e7/File/63907340463.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608343618f45f---vagefosapikodozolo.pdf
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/57180716003.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=bloons+td+6+latest+version+free+download
    • 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_off00013185.bin
2e048be43b265467bbf76866f1771da835ea5a8ee96a3fce1a37af2bdd9802af
pdf-font-stream PDF embedded font (sfnt) at offset 0x13185 10720 bytes
font_01_sfnt_off00014a65.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x14A65 16792 bytes
font_02_sfnt_off00016277.bin
ae40e4427fd87627189ee7de70b43ffb01a24a4f0fe92b0996a78eed1b6b4e42
pdf-font-stream PDF embedded font (sfnt) at offset 0x16277 17892 bytes