Malicious PDF — malware analysis report

Static analysis result for SHA-256 7825806300d2d922…

MALICIOUS

PDF

90.1 KB Created: 2021-07-07 08:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: badaac833cc94bb3cc827358f9832679 SHA-1: 68b88dbba75ef3a31e29b9d8a2eeb2a03747add7 SHA-256: 7825806300d2d92296a2e79b0edc0e7e756aa02a9b14ea9cba355aeb434ab9a4
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It impersonates Amazon and contains a link farm pointing to various domains, likely to obscure the final phishing destination. The embedded URLs and heuristics suggest the primary goal is to trick users into visiting a malicious site for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+calfresh+and+calworks.
  • 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://pasarantogeldua.com/contents//files/voxuj.pdf In PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/73482256684.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae28bc84c12---10911779836.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1af0130ac5---89662953497.pdfIn PDF document text
    • https://altonika.pro/files/fck/file/xexewunurivezi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b731a4ce237---dapofufeda.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/97214059297.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e31869a5d1b---63099294620.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec88717a3e---sorabobipuwisawuvoxiz.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/r1m2ucptvdqva1lqik4dkgpbf3/5182127050.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/7d0d7c3aeeda63db2c4c7d23d4615219/16504218136.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4283b17ba---fukodurewufuwovafexofawiz.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/runusetixegevekizugose.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607278be35095---xifivopekefuxino.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/7f308bebd06b459c490697db41bd0a3d/28775545301.pdfIn PDF document text
    • http://netcentricnj.com/ckfinder/userfiles/files/lodedurofuteded.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160dd71de41d84---fejanalo.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/fuxamakos.pdfIn PDF document text
    • http://citadelcaralarms.com/userfiles/file/guzikiguw.pdfIn PDF document text
    • https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/473eca5bbc05eef670358f0a3b458dd7/78835544579.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8ef4b838c---zafokivududobuna.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/rizatikelerota.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c5ed914b8---15356346721.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+calfresh+and+calworksPDF 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_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11576 10744 bytes
SHA-256: 36ec4fafa99ce559726d6aebfab8f3529fec0dfd6c9dc5d8fad63b33d6572b37
font_02_sfnt_off00012e31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E31 17144 bytes
SHA-256: e5f198a2f7470f19a43e5e055b7a95f49e997773bd86e578e3a220fe794b89e6

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