Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c2792567dc8217…

MALICIOUS

PDF

79.7 KB Created: 2021-08-15 12:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e22f56e74a4ed467d221a2c7d7bd29a4 SHA-1: 12aea8e60cec8f276e3eb5e24349dcabf409ef14 SHA-256: e0c2792567dc8217360c12d1319fdb029190179c0364aadbc94d85d8e24f6905
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It functions as a link farm, containing numerous URLs that point to compromised WordPress uploads and disposable hosting. These links are likely designed to lure users to malicious websites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://chcial.ru/uplcv?utm_term=pre-ap+chemistry+dimensional+analysis+worksheet PDF link annotation
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160d2c3eb8e93e---16363062550.pdfIn PDF document text
    • http://paliukenas.lt/i/File/wegajefagiwebudon.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/lilixirivapobuwiw.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/72813657466.pdfIn PDF document text
    • http://fittbikese.hu/files/file/werodutojofutaratane.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/66d92bb826dc8a399c2f5b78ae53f487/sugivefimafux.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/tfvqbvmnb0ab67uv9ecoie9d0r/kuzepaduvikibe.pdfIn PDF document text
    • http://studiolauramoschini.it/userfiles/files/46074446172.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/cf0gqq3jtkjel2hlf1tlirs495/18323503658.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf37935a9b---waxuwal.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c81248b1a---9325420404.pdfIn PDF document text
    • http://theettiaresottawa.com/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/xenijoga.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3062bfa85---mulogixoxixegawojifapadu.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/jubotaf.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/babosuxeripeb.pdfIn PDF document text
    • http://micronforgacsolo.hu/UserFiles/file/lonotelixowosodiviga.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b75b80fbf5---xewedidesadoguri.pdfIn PDF document text
    • http://biosite.ru/images/news/file/jolebexu.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/19192417586111a8814ddf8.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c1179dcc55e8a997685ec2e6f453872a/goxonidonuker.pdfIn PDF document text
    • https://fcksa.com/ckfinder/userfiles/files/zivuwaguborewiluputetu.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d0acdb26e95---mukamaganuxur.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/o4740bosrbcg6mus0qgv6g8g26/divesefusevod.pdfIn PDF document text
    • 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_off0000d2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A5 11104 bytes
SHA-256: 27bb1686c6412916cea95b36b97f925e52887497d529c72e1b51869e168a453f
font_01_sfnt_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001048c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048C 16864 bytes
SHA-256: e4158266ae1e201f4f23320c5e81cf6325af4bfb4f696d58ddabbd6a4ecbdbcf

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