Malicious PDF — malware analysis report

Static analysis result for SHA-256 3389e2dfdcdbde57…

MALICIOUS

PDF

79.6 KB Created: 2021-09-01 22:51:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 35ab1f12458642f23376a68eac77c3c9 SHA-1: 1158ad4504ca8713ade2dd0d8fa8108380f5a25b SHA-256: 3389e2dfdcdbde57531fd49832384a069fc627d575222219d1a0e031644db261
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains a link farm with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to lure users to malicious content. While no scripts were explicitly extracted, the PDF structure and link farm indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3497

Heuristics 5

  • 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
  • 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.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/ac638b0d83e207c75fbe0598111bb953/57756938488.pdf In PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/d5g5n2q1fhdbv0ch32t00u5vui/6628208240.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/29536550218.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/okomk8aic5nskuj76j7tbv4pi9/27626754372.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/bivivasovugupebakoro.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/rmjqriebq42bsaelq3l05nbnsi/fotanoxatovavib.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/5srehaiid7b0co4r4rhc765331/monutosawew.pdfIn PDF document text
    • http://0851gay.org/userfiles/202107file/2021072606131270554.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/kisotuguzigasejavotebukir.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16083f39474f4b---ponolekumono.pdfIn PDF document text
    • http://somersetcountybar.org/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/87736722087.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611946844538f---1581998837.pdfIn PDF document text
    • https://ols.lighting/wp-content/plugins/super-forms/uploads/php/files/c6170938f2247135e820f3aa91066fc1/48542716551.pdfIn PDF document text
    • http://luxmeterthai.com/ckfinder/userfiles/files/sumudigideboraf.pdfIn PDF document text
    • http://0575zl.com/userfiles/file/gizivamit.pdfIn PDF document text
    • https://www.greenlakecruises.com/ckfinder/userfiles/files/40607844252.pdfIn PDF document text
    • http://brucemsmithlaw.com/clients/e/e2/e252bfde01ef004f685a9648d307a4b9/File/23447631905.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/ok06gda3gr7g6rdtte9rn8qe40/97137388193.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/68436795122.pdfIn PDF document text
    • http://marchmontnews.com/imgs/file/68267563422.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210817121016.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/06d0faafba8e715485067b7b38f5609a/visatonugitisipubagu.pdfIn PDF document text
    • https://ubranni.com/uploader/files/55859966216.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=flying+spaghetti+monster+bible+quotesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0B 18652 bytes
SHA-256: 0a9ccddcdb4c5fc511b9b43978af949dbe9aa1a2ea49502c785796a6a2f25069
font_01_sfnt_off00011e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E54 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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