Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eedc1cc3e62eecb…

MALICIOUS

PDF

74.5 KB Created: 2021-06-26 22:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cf453b2a4d4cbc270143f874a38b45c3 SHA-1: 9e96e32fc5bfaa0158f704050aeba4bbd83806bf SHA-256: 6eedc1cc3e62eecbf7910c7279bcf2522bfe2bb0334c614316282d380910a746
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to websites, many of which are hosted on compromised CMS platforms. These links likely lead to malicious content or phishing pages, aiming to trick users into downloading further malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c691ee62b5ab1539aa17a240b8cef5d4/kinofet.pdf
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/89100914666.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/g4qb3qd3t8ocs6pmmcloe4cpe1/pidivaparojitewupuwi.pdf
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/mivafezikikonadabuwupul.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c07bfe1bfd7---98729543563.pdf
    • http://keralabiblesociety.com/fck_uploads/file/58408212416.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609947fc74560---3602188109.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/4a27f366d55dfd01dcf66d2a4800b34a/55039015711.pdf
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ecec735b3a---51183260520.pdf
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606e48d39cffc---45567907837.pdf
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/6cc5191d5ee682a58bda620da8638232/fivawezeladegazisoji.pdf
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/e202aba7b09213a75f0e0373e7ea233a/jovubuwiguxosigobeb.pdf
    • http://adamlegal.com/userfiles/file/78517175269.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7fadd41c1---bilimiza.pdf
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/4a500755914b3804ccbd8a876613891c/76775007524.pdf
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/bd2a6a2a98d4151b1c8440cfd80a0d75/88077322722.pdf
    • http://www.lugashotel.com/data/editorfile/73338164883.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/fc07378037a7a803282f41ac8845339e/wazom.pdf
    • https://unserbiokorb.ch/userfiles/file/76845696113.pdf
    • http://coopmong.com/ckupload/files/xurisojurijafofi.pdf
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/lonikusede.pdf
    • https://rajaunited.com/contents//files/65573042762.pdf
    • http://sns.hu/_user/file/zifewesiguti.pdf
    • https://heatingboiler.ca/fck_upload/file/xifipuk.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=workbook+answers+science+10
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/bce76ef6ffb45eb34c9ae981cc7468d0/xumuzinusoguru.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c117.bin
7f766856b2111ee42185f2fcf1c2738804c390b208817d66b48feb2c6688fdca
pdf-font-stream PDF embedded font (sfnt) at offset 0xC117 16176 bytes
font_01_sfnt_off0000ea83.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA83 16792 bytes
font_02_sfnt_off0001029a.bin
5b37657ae7da13e83a1927c2cc42e56f6167c76aa6f20bb3d5e7d6fe401db07e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1029A 10564 bytes