Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f2f475d6bc4acd…

MALICIOUS

PDF

78.3 KB Created: 2021-10-04 19:36:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 86478c51c8077a8cf92244997eb4d223 SHA-1: 55e927832704a2acaca55759a5bbf82ed9bdf92c SHA-256: 97f2f475d6bc4acd6d47139a3a9581e2d9bbd26aeb86f9974405c71ce20b1185
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded JavaScript stream and numerous external URIs, indicating an attempt to redirect users to potentially malicious websites. The PDF structure suggests it functions as a link farm, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=impure+water+meaning PDF link annotation
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vetuzawarus.pdfIn PDF document text
    • http://sweed-trans.eu/ckfinder/userfiles/files/goxaxegijotulijikuvabip.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/wesabawiburalijew.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/mexaboxire.pdfIn PDF document text
    • http://ng-sons.com/userfiles/file/laweduraluxunakarino.pdfIn PDF document text
    • http://carnow.jp/js/upload/files/lovegulipa.pdfIn PDF document text
    • http://sintjorisparochie.nl/userfiles/file/bimufekidarevoseduli.pdfIn PDF document text
    • https://skywaytravelandholidays.com/ckfinder/userfiles/files/96594513588.pdfIn PDF document text
    • http://polesprogettazioni.com/userfiles/files/37934032750.pdfIn PDF document text
    • http://ybshajiang.com/userfiles/file/2021-09-03/2109032045302426182rg5octex8hc.pdfIn PDF document text
    • https://adoz.cz/ckfinder/userfiles/files/75767136820.pdfIn PDF document text
    • http://runhouchem.com/upload/files/88248964217.pdfIn PDF document text
    • https://voyageaventurenepal.com/upload/files/gepisoxuxoxojosijobat.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/nixifu.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/6065958321.pdfIn PDF document text
    • http://cieplej.pl/imgturysta/file/38332750323.pdfIn PDF document text
    • https://rawoctane.com/uploads/file/26940456626.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/53683995281.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/bunokiterasunepoj.pdfIn PDF document text
    • https://nhuadailoan.vn/upload/userfiles/files/31530429328.pdfIn PDF document text
    • http://3dprofi.net/images/uploads/file/41413899010.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdabc05e68---64011715886.pdfIn PDF document text
    • http://daisin1977.com/js/upload/files/gunopalokav.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_off0000c494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC494 21172 bytes
SHA-256: 666b986f1638a5fb4222366d706e1d04fff41e8dd5210057d45b4d6b9f44d4b5
font_01_sfnt_off0000fc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC44 10400 bytes
SHA-256: 8a130bd2e0f4f22a4e04a8628c237b1ac568b36b2ac7a2641ccd641964e51a3b
font_02_sfnt_off000113cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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