Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5e7c701f7f7954…

MALICIOUS

PDF

92.4 KB Created: 2021-06-30 05:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 49e35a7168385903808369506a3fdd5d SHA-1: 97add24a923d9efe2b4ca5f27593fdccd3446f96 SHA-256: fa5e7c701f7f7954bbafce51cdb36a50ffc74713445e631013af968415b15ff6
156 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised WordPress installations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish users or lead them to malicious content. The file's structure as a link farm suggests an attempt to distribute malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f96036f666---tatonatupubedidokulifoseb.pdf
    • http://sotel-perm.ru/site/file/fiwodetujodovurevupujew.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e739d71b4---vavixiri.pdf
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/8bs0khifn9g5ka55i878qeed1c/tiposuzebedugipofutuv.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/3144d7a8abf14a498f61d39e0239095c/31630811209.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/cot969e2ng5hnkbbqd4brjdquc/donepikuxuzalinoxoto.pdf
    • https://alutat.com/data/file/mudatebirutibufedozano.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b57da8640db---34246625740.pdf
    • http://onellenorzes.com/uploads/files/648271523.pdf
    • http://arebiatours.com/uploads/files/29958145271.pdf
    • http://saxonrt.hu/img/userfiles/files/tejamajalemulojadage.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ab606f5fb24c2e139d195dcce128f5b3/botenigapobosogezisokokep.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c592f0cae71---3532877633.pdf
    • http://abwva.com/uploads/files/44220320439.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608799ead8be2---ritenagisoxago.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b917a6c73---73607430582.pdf
    • https://vietucmould.com/img-vietuc/files/20268935589.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b592c48ab26---jamopexulexofovu.pdf
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/1ca36ad0ed5471bd19169d527e8e386a/pepogibuboxareri.pdf
    • https://tongdaidoanhnghiep.com/app/webroot/upload/files/dijekomopejunuzod.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfc5b95183---gotalenago.pdf
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0e9e3cc21---50416459198.pdf
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/abe0233a68852b139367e44a04d43b47/52161283924.pdf
    • http://sxhk365.com/uploads/file///gaxoteriru.pdf
    • http://broadviewlibrary.org/uploaded_bvlib/file/kukikutiponobununazatopaj.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=tabbouleh+with+cucumber
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/2c00fb54c1377b87a69d415bdab035a8/kutelujutunexowakos.pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef58.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF58 16792 bytes
font_01_sfnt_off0001076f.bin
86384073e63ccd6521edaa4119f8d0f5bfcfbacf6eb2d1d868a07731adf2b064		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1076F 10512 bytes
font_02_sfnt_off00011f6a.bin
9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6A 16092 bytes
font_03_sfnt_off000134ab.bin
cfc8e7d08ee491fdbe629a000b9c902af9be8d78bbff27cf4bd3d3184aa68566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134AB 17680 bytes

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