Malicious PDF — malware analysis report

Static analysis result for SHA-256 316446c084078e3c…

MALICIOUS

PDF

325.4 KB Created: 2021-06-23 14:32:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 013245511c443e27f26e4db2dfffce2f SHA-1: b683c4011b3831e0b6e21c0520bc1c6a4ab1a56d SHA-256: 316446c084078e3c60b4ebdafad270fe20e2343ef150e82edc731a90280e6963
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9828

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.
  • 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://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/1f1647bc6bba49d44829d6a4192ec715/muledenijopavovunafufid.pdf In PDF document text
    • http://aliceinformaticasrl.com/user/pages/62272155735.pdfIn PDF document text
    • http://ctkupavna.ru/upload/file/wuxoxodopejoxi.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6d41ef581---51275531968.pdfIn PDF document text
    • http://yokohama-model.com/userfiles/files/jewuxegaduwojupewaguge.pdfIn PDF document text
    • https://thietbivesinhanhhuy.com/asset/files/magibavog.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b285db1a6---tafalaxanasewu.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/f883ecf18dd444037b84bc026f291391/wijaxeloxe.pdfIn PDF document text
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/fosesikurutemipa.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/nj6tq98k81kh77ck7604galg41/4326458910.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608485e20d578---sezebigarojubip.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a4340c786c3a132a717ca8894efc16f8/85667885976.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c1bbecc1d9c---41991732122.pdfIn PDF document text
    • http://skyfestival.kr/ckfinder/userfiles/files/61268283087.pdfIn PDF document text
    • http://geoplan.su/userfiles/file/xupumoxuvesogifovamemuk.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/8091bf8744fd5ac6a2294b51bb8bbf8e/sivubudopaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=swami+panchadasi+pdfPDF 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://scripts.sil.org/OFLIn 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_off0004c2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2F0 4944 bytes
SHA-256: 9af4445f727c5a7fbc4bf00754e578f1116b5eb32edea55d11c9eda086315e15
font_01_sfnt_off0004d38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D38C 10768 bytes
SHA-256: e5e1a474665d83cb6a5692983378079839643b1ff765817c707d970128d70aef
font_02_sfnt_off0004f812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F812 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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