Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb5957bc55a9a89…

MALICIOUS

PDF

72.0 KB Created: 2021-09-08 22:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 94b6404a69b064e5eb274946273d2955 SHA-1: 4044277881be1f01279e56c303ef27313939ad80 SHA-256: 3eb5957bc55a9a894e0ade96fc5000be4604d9a08b90a42b6a18b55b71f42f09
126 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external URIs and is structured as a link farm on disposable hosting, indicating a likely attempt to redirect users to malicious websites. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=book+of+genesis+pdf+free+download PDF link annotation
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/b384cf7a5379831fbd8d5ab09a572de0/tizijela.pdfIn PDF document text
    • https://die-elke.de/cms/elke_page_files/file/rizenupezeki.pdfIn PDF document text
    • http://lmleadmanagement.com/userfiles/files/42542658211.pdfIn PDF document text
    • http://nb-magnet.com/upload/files/72459068754.pdfIn PDF document text
    • https://funke.be/data/file/79264662228.pdfIn PDF document text
    • http://cnhhgj.com/upfiles/userfiles/file/sisifufokiroxusefubipopox.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/ae75d762428eca6caee7422cfcd76395/59690892368.pdfIn PDF document text
    • https://gregoryshow.ru/files/file/munotozow.pdfIn PDF document text
    • https://mimpishio.com/contents/files/67425694638.pdfIn PDF document text
    • http://sriagasthiyarastro.com/FCKeditor/userfiles/file/wowirasodugifudidelen.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/mikutepedejazoxo.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/vofiwuxilubunuwolenuwala.pdfIn PDF document text
    • http://nato-denkmal.de/uploads/file/6612007917.pdfIn PDF document text
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/divosoxug.pdfIn PDF document text
    • http://integrotech.eu/zdjecia/file/xovogalerikamud.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/62140568635.pdfIn PDF document text
    • https://demo-calson.garment-pro.com/ckfinder/userfiles/files/47067728833.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/saropowoxagosana.pdfIn PDF document text
    • https://pasarantogel2.com/contents/files/47656957140.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/bapuzizupujexez.pdfIn PDF document text
    • http://yasairamenbar.com/uploads/files/41067670676.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/baxafelaxagun.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/42930372273.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_off0000b7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C5 10804 bytes
SHA-256: 64bdae6677e65122f266fdf39956175483b19d1354dd7b82214c10fa2a953eaf
font_01_sfnt_off0000d0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 16340 bytes
SHA-256: 2f22b5adfc49d69bd5125fa2f86a6c2a1a81bb5724adb0022f96fa91c463ccfa

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