Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf759ab80f26d20…

MALICIOUS

PDF

85.9 KB Created: 2021-09-24 00:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6da56733243de9a2464536d72e6133f2 SHA-1: 179f9b16428de51909bacee6306910b9ed6b05ad SHA-256: faf759ab80f26d2077f2cd90b74a498f5fde5cb68408f2716369c8e1c9b97a0c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to potentially compromised websites, suggesting a phishing or malware distribution scheme. The PDF structure and the presence of external URIs indicate it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://uniondrygoods.com/fckeditor/userfiles/file/57252453283.pdf In PDF document text
    • http://c2ctrading.org/cms_upload/files/88079580016.pdfIn PDF document text
    • http://gorod-r.com/userfiles/file/xogusobada.pdfIn PDF document text
    • http://fslawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fariromatanoji.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/wojibex.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/vozosejojado.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/e032049dff687571504e01dc6506ecf8/29575049085.pdfIn PDF document text
    • https://stichtingech.org/ckfinder/userfiles/files/38259085675.pdfIn PDF document text
    • https://umutfm.com/resimler/files/dazoxumutafaxirewigi.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16149748ce9b6c---74930797990.pdfIn PDF document text
    • http://gruppocaminiti.it/userfiles/files/39484372324.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/77844434429.pdfIn PDF document text
    • http://alfavit.tv/userfiles/file/finotafepuveni.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/17016184188.pdfIn PDF document text
    • http://xiangzhuan.tw/upload/files/mufeja.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/60572354915.pdfIn PDF document text
    • http://divodizain.ru/ckfinder/userfiles/files/51143151597.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/59025973066.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/rodonel.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/58324397245.pdfIn PDF document text
    • http://autoservizimensi.it/images/fck/file/18712137410.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/81083142139.pdfIn PDF document text
    • http://chokmanee.com/userfiles/file/varoxexosikubinedewobi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=game+for+android+2015PDF 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_off0000eda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA0 17088 bytes
SHA-256: 8ef8217bbafda87690fa5b0321869c790932f37bbde04105f16d4a329aa1ce53
font_01_sfnt_off000119ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000131c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131C5 10672 bytes
SHA-256: 08add7bd06889410507d23679a11413124635501f24ded5fbdab83ce755ca058

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