Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d7c9c063c277ba…

MALICIOUS

PDF

87.7 KB Created: 2021-06-30 09:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 950ab71aae0e6d32eb603f4652d794e1 SHA-1: 2f75cf5fd5a29442cbedadbb186277ec28f596c2 SHA-256: 03d7c9c063c277bac0833f96d62d3d943e20f9e7566680ccd960741ea46e2d77
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains a link farm pointing to numerous compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and link farms indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://allytemp.ru/uplcv?utm_term=states+with+largest+prison+population PDF link annotation
    • https://aartipalette.com/userfiles/file/sebelej.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/a62d53e3d35ba81656d1c6016bccb4dd/wasovewitunulola.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/79908776841.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4dcd081aa---3751081293.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c18b65aea---17818451617.pdfIn PDF document text
    • https://steammining.com/userfiles/file/24972336394.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/oiteava94u8rfvfvrstdi9h5mg/49318289271.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/ib12g651dl50l4ptijhuu6dsum/pinolipagoj.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/65116512674.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/58022efc2cb88d2a1bf24179a96c2551/panukeni.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4d63a8658---sekevadalofufu.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/70051563111.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/24616563477.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/30f56ad997869b67350b49b131556ca4/kuravinidifeb.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/davipa.pdfIn PDF document text
    • http://brookhavenclassof1967.com/clients/0/0c/0ca802fc87877f8c548ddf85495caeb2/File/xitewewajuwakezupepini.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/cdbf49d74397fea4bddb659e20cac951/dutuwazitovotuzonaxa.pdfIn PDF document text
    • http://matchonusa.com/uploads/files/11094411637.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/0qb6t2hb707am2f4rqs459caqb/nugevulu.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/v3uefcladj5lvu3a53k2f57v3m/buxosijifapopusowesij.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b403a5a2ea9---geviwufigikonojofad.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe6c54ecc8---viravuzip.pdfIn PDF document text
    • https://protectname.xyz/whoisprivacy/userfiles/files/80951623973.pdfIn PDF document text
    • https://trimix.bg/UserFiles/File/bevemozelibozejajiwuwo.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_off0000efb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB0 10792 bytes
SHA-256: 107594c0fe2e77b2c148805e47ff1a2413e87ac2172ab6b22a1a2c3b60a9d58c
font_01_sfnt_off00010880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10880 18528 bytes
SHA-256: 873f19307a08d23e4452e2f3f931d620f8695d53bb12d51217720efd71fe57a6
font_02_sfnt_off00013975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13975 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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