Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e6ecfa8e42ae52…

MALICIOUS

PDF

86.0 KB Created: 2021-06-28 13:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 159539484ce3de9b8e90eb4bc29d601e SHA-1: f508062b6f1e3263c3a25880c2eedbfcf5ab1aef SHA-256: f0e6ecfa8e42ae526d2d6fbaeacec8b7f0857b4334af5c8f44981a68916e157a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or are part of a link farm designed to direct users to external content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware through these links. No scripts were extracted, and the document body was unreadable, so the analysis relies on the URL heuristics and AV detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://sammyuriasproperties.com/userfiles/files/jenavubosesab.pdf In PDF document text
    • http://cpbnatation.fr/fckeditor/userfiles/file/54713882444.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9f546291a---zokavarovonum.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/e370ef5c642157f8b9f79a258a777cd1/98680445226.pdfIn PDF document text
    • https://strechybenesov.cz/content/14390438304.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bcccff28ce2---47314591334.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e0a05dd52---79516607848.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///puzarokakevifutawa.pdfIn PDF document text
    • http://biomassasia.net/data_ed/userfiles/file/14506810089.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/f830fb17005a8621587c0561a4693844/lerexigos.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/srci331i93a12l0dkg1d8phmro/surolaxisulakatozodo.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080c91e2b319---wudaxipatogewuwinof.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/repepowewo.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608277889f731---kuzebasifikixitaboxom.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/02d2b12f158c4b5246c9d0aac25f23dc/91809749451.pdfIn PDF document text
    • http://magogaralbamoble.com/galeria/files/12790326024.pdfIn PDF document text
    • https://susta.vn/userfiles/file/dirot.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/vukizaro.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/cd162ef862d3b1a5c6551920f7357cd8/66946864339.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b038bebac---razigirevokafafa.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c772eb745c---jupeti.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd6c4be6f1---8551087229.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/26719188164.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/37334931165.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/11088854525.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=add+and+loving+it+streamingPDF 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_off0000edb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB1 17012 bytes
SHA-256: f493849e2e7c1347a122b40160185c77438f8eb6a715b5f125bf45d9eddf51aa
font_01_sfnt_off00011a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13246 10640 bytes
SHA-256: ed327e70a3b1686672b11ece7070c72c73bbc6db4ac89e01e6e46b7f4fac37cc

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