Malicious PDF — malware analysis report

Static analysis result for SHA-256 449c72c8b6e39c6f…

MALICIOUS

PDF

84.6 KB Created: 2021-09-02 02:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 3eadd91ec3d2b1553e0d5d98974276a9 SHA-1: b6e78cc1f4477ce3bcae4a61996cf75c2a28c296 SHA-256: 449c72c8b6e39c6f4a5ec43cc2cb21f6fec4528e6079556f198c3c7968dbc4de
164 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many hosted on compromised websites, suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the malicious intent of luring users to download potentially harmful files. ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=black+panther+tamil+dubbed+movie+download+kuttymovies PDF link annotation
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/zasifadunovizulipa.pdfIn PDF document text
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/gitotalot.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/8b8nm2gkbjphkkllfkc9v81514/60988448162.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ed282b363---nodaxabisuf.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3960dd0d29---99232327917.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/cb4d5da0b0a29a4f8201b42512c7c5c9/barozuwusilalizovuguz.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/6784919309b1da0dafb1005c1ff40e7c/21153198870.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb118473315---vabepebire.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/ao24aadqqnrpkeb4mspm7lfjci/53266309248.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/f7ad234ea7d214247f55769501c7f358/zomogolokejexi.pdfIn PDF document text
    • https://aashianarealty.com/file/74445939002.pdfIn PDF document text
    • http://magnumprint.ru/upload/files/naxegetilusovox.pdfIn PDF document text
    • https://nexusmediation.nl/files/lopuwiba.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8aa65629ca---98744137171.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607678fa40d48---48151355245.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/suzotanigikinibisodi.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611db52d2d098---tifoj.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/ab42ad54a78f2380770fea3221eb5e1c/87638712073.pdfIn PDF document text
    • http://roycraft.ca/userfiles/file/49664121255.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e2eb635441---girupogevigepibabumemit.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/n2fp113eiumh560a08fpdk0286/62130416006.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9626df4a7---93743347398.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/fc6f395b30f904db9078a743df186e4f/jawunewisomatuzi.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a724044351a---rotujulojogalasisap.pdfIn PDF document text
    • https://saint-florentin.charcutier-traiteur.fr/ckfinder/userfiles/files/21095861966.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_off0000e074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE074 18344 bytes
SHA-256: 31b300e4dbfd9f0de21e960dc21accc7b75f4bae57e7de078a1ee86bfaadd8e7
font_01_sfnt_off0001106b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12882 11428 bytes
SHA-256: c579cbd8a3d1315f58ad148aee4387aaf5e7f1ab0c4aeb341ff97bea832dc44c

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