Malicious PDF — malware analysis report

Static analysis result for SHA-256 230051076dc973fb…

MALICIOUS

PDF

92.2 KB Created: 2021-06-30 00:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9e85b63be99a1d2fd752c51f627ea0bf SHA-1: 2e31c676df48a1ff433365c0cc19b52382f388a6 SHA-256: 230051076dc973fb9e3a2bdea2f528966afae7f144d165cbb630c1d327386f40
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating it likely serves as a phishing or malware distribution vector. The document functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content or exploit kits. The presence of multiple external URIs and the overall structure strongly suggest an intent to lure users into downloading further malicious payloads or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://brandnewgoods.net/userfiles/file/welevebarofezireb.pdf In PDF document text
    • http://bright-inter.com/file_media/file_image/file/nagomikam.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b5cc4a613a61bc711fc3c828288731fd/34512911165.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ecf606bad---jejuruduragip.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c49f2d2b0---46222808090.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/wasesij.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/ae5cec88bebc765f05452afabc1e377e/35134406451.pdfIn PDF document text
    • http://cuatro-pr.org/sites/default/files/file/raxifimoneroxisirof.pdfIn PDF document text
    • http://n2nlah.org/UserFiles/file/60295435267.pdfIn PDF document text
    • http://21cedu.com/pds/userfiles/files/29474261291.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/tvfj9kekmeqrq84e1c37pjjnot/pavutejusufonanatasimawef.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609633c7714f5---50998411427.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c583443ad56---xodiw.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/74345790357.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5f1fc886eb---bititariwazuw.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/9082843626.pdfIn PDF document text
    • https://autoteam.in/ckfinder/userfiles/files/576671196.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/29c56ac619650e83168aff354b0df46b/tekikowegav.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609309e718d00---masajarujebavuxige.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/99e335da1b2102bc469a89ccbb7ed9b0/71700622887.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/lutipife.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/f3d662138bf143811945359cbd876c73/tabexifa.pdfIn PDF document text
    • https://plasy.com/uploads/file/18253164753.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/9305772ba2e7818aa6c6d3b407f6e302/95670676544.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/484295dc7173f7c655cca8e39e11b774/24756272366.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=naruto+opening+songs+listPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001061e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1061E 17668 bytes
SHA-256: faadab4502e3134e878a9f3c0114031fcd6c75cac636484dd278be5db49d0c65
font_01_sfnt_off00013482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13482 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C99 10504 bytes
SHA-256: 9958d500184ce9ac28f7b07cce5e5c6da91a8b5e56872d97fce95931d387471f

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