Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b60d9c3b414c8d…

MALICIOUS

PDF

89.7 KB Created: 2021-06-28 04:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e30d6898fdcde564ead5934a0bcdaff4 SHA-1: c1f09ed4fcecbf940d4bfc90fb8e4a857de3d2bb SHA-256: 02b60d9c3b414c8dab05fd446302113967edf891f60ceb5f512211b1049e58a9
176 Risk Score

Malware Insights

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

The PDF contains numerous embedded URIs, many of which point to compromised WordPress installations. These links are likely intended to lure users to malicious websites for phishing or to download further malware. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ba1680861---5851898501.pdf
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f91b08e05c---86892077097.pdf
    • https://cbconsulting112.ca/userfiles/files/96148789134.pdf
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/c5d1aad9a165d44944519cb4cbb5fb7d/42199232251.pdf
    • https://ebooksweb.net/files/file/43329049533.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/3238eee0ca0bdfa486150b73ae46b5d8/tonaxaxagudosigimezarowa.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffddad752e---guresibalamumoz.pdf
    • https://hmanagement.net/userfiles/file/65604447878.pdf
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160817180de6ec---41355274546.pdf
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/bf90f24612840ccab3e6edb259b22ab9/jujilekanijefab.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/fa05730e24d5784bc89f1a7c9fb016d8/rakowosanosom.pdf
    • https://www.sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608fcce7c4772---gezivowosisurav.pdf
    • https://gastrotest.co/ckfinder/userfiles/files/32186360680.pdf
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/bmg67j2k0lf5a5ht9teub697i6/nuluzawometevelami.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1608202c32919d---tuzekafatibezal.pdf
    • https://ambient-interier.cz/files/files/5833554121.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/6db383a3d6990d2a276d8051dd5538b0/kukunuboruf.pdf
    • https://ludifrance.fr/userfiles/file/vamatubedirupifezumas.pdf
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/36036503258.pdf
    • https://kamarkosong.com/contents//files/burifurovelasuwubetugupev.pdf
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/35g7ro0dbb725ecehc4uashfut/74544193116.pdf
    • http://neoneophytou.com/ckfinder/userfiles/files/4209500267.pdf
    • http://drivescuolaguida.it/userfiles/files/sisukotaweleralibalopeva.pdf
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072ff861976a---45191685602.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=what+is+a+pdf+format+mean
    • 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_off0000fe51.bin
d6f07c8b5427a69141fc65a0664fd90d2f24df3365dc5df669fcf852c1256fa7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE51 10712 bytes
font_01_sfnt_off000116bf.bin
e579ad2fce370304522c058b915138ce08cdbeb23bbbd706cf180fe83fe4521f
pdf-font-stream PDF embedded font (sfnt) at offset 0x116BF 16688 bytes
font_02_sfnt_off000141be.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x141BE 16792 bytes