Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2945929263f043…

MALICIOUS

PDF

82.7 KB Created: 2021-09-02 00:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b63ee39f82106733ddc39ca8646a9535 SHA-1: 483ffa06907d7c14c948a90aa3b4a7e76b3a3e71 SHA-256: 2d2945929263f043627c73544e255aa45378d9fc0ca4e2d14a1b15ef5c129fdc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised websites, suggesting a phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a link farm on disposable hosting, likely to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 https://bisnismedsos.com/userfiles/file/64734986376.pdf In PDF document text
    • https://skl.deindrukdemo.nl/upload/files/najoxuzesekirusevur.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089efd4d265d---983920036.pdfIn PDF document text
    • http://tractortools.cz/ckfinder/userfiles/files/29857158447.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c973e0cc92---gogonavuwogibezenonisu.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fc1dc6e4e2---38032166302.pdfIn PDF document text
    • http://puntolinea.org/userfiles/files/nigipujegawufi.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/47588590104.pdfIn PDF document text
    • http://azizavacanze.com/userfiles/files/rabuxe.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16086090f94315---34122944974.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/zigilanu.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/50127844236.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/79572963179.pdfIn PDF document text
    • http://tea-ra.com/user_data/upload/save_image/files/90555268434.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/zimunasodexesuribura.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/d8c12245c33ed7f4a6b8d89220338017/likikarovivokewulodu.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b986cd2f9cf---xawotuwifosatavapo.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/69515297303.pdfIn PDF document text
    • http://bbhshipyard.com/userfiles/file/regofefafemujozadezuwuniv.pdfIn PDF document text
    • http://vce34.ru/attachments/file/bitotodin.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/88012032302.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/2d0b782ecf82b4ac9d582705dc5a9e7e/8835192011.pdfIn PDF document text
    • https://www.alugutader.fr/ckfinder/userfiles/files/rebexuzinisagoruwebojabop.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=eimeria+oocysts+in+dogsPDF 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_off0000d8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B2 19272 bytes
SHA-256: 26392ad1cc5d695e7e576fcccade3e26fef8e56f22cbd32b2b680074e26c58a4
font_02_sfnt_off000123ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AD 10764 bytes
SHA-256: 01692de717f4212a21393ccad14b3ae6fba1fe9842e53e634013d4dbe59dd136

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