Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65fdcabfe6a4af0…

MALICIOUS

PDF

86.7 KB Created: 2021-07-17 20:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9d368b3785cd28f1b831aaf1b28b4740 SHA-1: 8320cab7e49f9e478096f4ed6d2aea0fe6284301 SHA-256: c65fdcabfe6a4af0fb09b35ae52a10c876de15a69ec9c080867e7fa7dc64af78
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing campaign, leveraging a link farm hosted on compromised WordPress sites and disposable domains to direct users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or conduct further phishing activities. No scripts were extracted, but the PDF structure and numerous external links point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://ibtaker.ps/userfiles/file/novogizunukuka.pdf In PDF document text
    • http://iraneto.com/basefile/iranetocom/files/newunagedokidanu.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087b4238dcc3---92699367029.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/0a8cffc59308896024f7825026ea2108/jojaletokubojameketu.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/zugopososetifazezos.pdfIn PDF document text
    • http://artospace.com/pics/file/25067821709.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6351826bd---gevasokovazejizebaka.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4707d172c---xuzarujemepemomewide.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/bugv1c1blareqsuccsvpilqmr9/palerejulijepopazoxit.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/61045052643.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/83ie949pakce5vtoanp178m196/63307684374.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/punikikipuda.pdfIn PDF document text
    • http://nctpa.biz/clients/5/51/51e593b678cc4707ea5ff7b662bcbdb9/File/pomigixijajuxusudal.pdfIn PDF document text
    • http://keacg.com/upload/files/ninixifokokimuzi.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/laveza.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607819f00793c---30693333078.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/kidarupirifamiludij.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160e016855e1a0---meladutazunemupinimefo.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb41f0846c---xegibip.pdfIn PDF document text
    • https://louvre.lv/res/wysiwyg/file/84578707613.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/89d37ef923335dc402050842d1168b24/20199064115.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160bea4d7db37d---lezogalazatokojix.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bbc285237---tufuxazanoxoxomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+use+apk+editorPDF 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_off0000f07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001088c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088C 17216 bytes
SHA-256: 2dfeeeccdf38872a06fcda3bb15a6f982d1c136bc71c7303143cc1511ba2378f
font_02_sfnt_off0001359d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1359D 10504 bytes
SHA-256: 19475e7f2de607f21d8ca68a85a0ff3646accfdb4ea3a9a2ee92974708d8dd0d

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