Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d9402eebf3397d…

MALICIOUS

PDF

170.4 KB Created: 2021-06-25 04:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e0675244ef640c576fbc63e13070c87d SHA-1: 4e727f9dd2914c6dfc4a5d41d1e1490457483049 SHA-256: d0d9402eebf3397d6232d0bf50e6af9e353c2c1150ac114e0ce3a178096f24c1
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 0.9986

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://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/0mkqe907hmsekpu3g0p16rglbb/moxatutinamebasobemuxa.pdf In PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b064c6ae4f1---21781853848.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/vpgbddsv4q90q0qifailh9badd/dodolerobopore.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a353cc192450389887650882423ce7f/83950008880.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/48435813462.pdfIn PDF document text
    • https://csn-alliance.com/data/files/nidirevabuwadoke.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160774d950845f---30755059049.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/98367512250.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9e437208c---panal.pdfIn PDF document text
    • http://peak-experience-japan.com/27166192429.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b9959e0d4ec9eb0db6fd5fbf83988c10/wegod.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/ea5ebef4f34cc5af600723086b885518/fatexasal.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160751e1e7e19a---2482916687.pdfIn PDF document text
    • https://loyallcanada.ca/editor_files/file/kutevewetesoran.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d98f6017c---62901945313.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb2e2afefb---ridenorotijivelagimi.pdfIn PDF document text
    • http://chiaranannini.com/userfiles/files/rulurasede.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/2e7b1bbdcdc8a259bf133b101ce07ae2/rikubuzotizirodaf.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=saccharomyces+cerevisiae+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23704 1636 bytes
SHA-256: 59647f1ebeca446cb7b14327fbfe7452410d861d1fe3742f48ab687bd9cbe571
font_01_sfnt_off00023f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23F31 5228 bytes
SHA-256: be4fe0c20b44e2035ca3b2ecb8cfe69b7717a0bd4d9dc846486d57a7a5aa2abf
font_02_sfnt_off000250f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x250F6 28136 bytes
SHA-256: 89ce4fd37edbf988050439872a732b4401e1ffcea58b33b7405abad8bfe6ec7c
font_03_sfnt_off00028cc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28CC5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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