Malicious PDF — malware analysis report

Static analysis result for SHA-256 107cd160dd0e2f54…

MALICIOUS

PDF

89.8 KB Created: 2021-06-28 19:23:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6136a05ffba81a471b309504f759afc8 SHA-1: 2015005b8231fba535027a30eef06a75526ef93b SHA-256: 107cd160dd0e2f546284f15a5140397b04a795f2619de39a54c8072087f8885e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF sample was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. The primary purpose appears to be directing users to malicious content, likely for phishing or further malware delivery.

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 https://hostingpazari.com/calisma2/files/uploads/5047215374.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/d49358571bcdd77148e2241d59f8eb94/28536634020.pdf
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e54e410d43---mabopiranowu.pdf
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d5299d3fdf3---64249389789.pdf
    • http://werder-ritter.de/UserFiles/File/kurijanomovulavukogu.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/1272904a0b5cffd909287d349cb25528/daviw.pdf
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/lhig0thc0a3e0v2pv22jkbt2s4/46377710661.pdf
    • http://asustainable.com/global/file/4977855437.pdf
    • http://seabeachthailand.com/UserFiles/file/rowaso.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e6daf33e2---povulokotivitanofi.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7aa9dbf523---46583009423.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16092c5ab93c17---82473644272.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1987e84d17---54950114628.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc839c48a7---ronaj.pdf
    • http://travelport.pl/userfiles//file/nurowuxaviwonovofoduluxef.pdf
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3efa7beaf---rimusipamemezifolinovumi.pdf
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ceaf0643d27---54151641462.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4391f2ea6e---69482741086.pdf
    • http://bearings-home.com/userfiles/file/gibus.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/2826c5ed201a9b2eb81770550a3d0733/zoneregilorow.pdf
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073b4084f647---87383330938.pdf
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/td8bksk53sibadi1gb6dkcvivv/ribavekomabilomekigonuk.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a17e9170cda---bifubegukawilatatap.pdf
    • http://fritz-fahrlaender.ch/download/96460754336.pdf
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b138bde3e79---46688351997.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=can+i+wash+cotton+in+hot+water
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc60.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC60 16792 bytes
font_01_sfnt_off00011477.bin
63d71d99f225dd388c649d929c3f4ee35963e255f26a5d85cbb436deb0463043		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11477 10400 bytes
font_02_sfnt_off00012c12.bin
d560278cbdfd5e6a5bd3d0bf3de375c9fe81bdea4b7b59d96a25cfe55d18b6d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C12 17348 bytes

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