Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ebfcecb8fc6f9e…

MALICIOUS

PDF

99.9 KB Created: 2021-06-16 01:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0a11f092219508a499caa190b788ca6f SHA-1: 7e5226f38293175a3792fe616ffb69a158c8137b SHA-256: 47ebfcecb8fc6f9e3aa3a57bbc2cc132ea0879574a04844515c7ef7280c634ee
156 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 0.9995

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 https://huntic.ru/uplcv?utm_term=rain+in+mk11 PDF link annotation
    • https://bselink.com/userfiles/file/xajidolunawowezi.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/22344283338.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5c0d166cb---xewenaninozukus.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/96694593854.pdfIn PDF document text
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743498c402e---47421191659.pdfIn PDF document text
    • https://mytopics.it/uploads/file/jipemejiduvotuf.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/vuxumizusugetelinewowijul.pdfIn PDF document text
    • https://ivanamihic.com//files/powimesiweguzunonolax.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608772445a5bd---9331711996.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160b32fa78b215---45570388403.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/lulijubemejibi.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/48af4ef6609d4049659f8025a9c65f12/zupokinimojedopoliloloxin.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc84eae544---vorobovik.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/giginekesuberubokofifame.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/n90g4qoed4a1tvi7s4evlk5qg2/besofeverogekabajaxoji.pdfIn PDF document text
    • http://lotusromeo.fr/app/webroot/files/userfiles/files/50423747305.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/0fed07bd3b83505f6e3d93a20e64029a/77848829517.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7f55c609f---22049567764.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
    • 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001338a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1338A 3080 bytes
SHA-256: 3ea9dc0fe5daeba8b7c1286de8752a991578e51b79301a8010be3d8f06b4997c
font_01_sfnt_off00013e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E92 4128 bytes
SHA-256: f5a4053512e79b5456896d163597ff29af7a7f0eb62a68775a544fef24c43fc9
font_02_sfnt_off00014c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C64 12096 bytes
SHA-256: 4d509b251425e3b88dbc524209bfa80111dbb344fd25fb331de2c5aed8258759
font_03_sfnt_off00017437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17437 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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