Malicious PDF — malware analysis report

Static analysis result for SHA-256 6885392b5cba0a3d…

MALICIOUS

PDF

135.7 KB Created: 2021-06-29 01:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 46b2903227e7c2285b56e69c934eb9d0 SHA-1: 59bcb8aca27e2eb1535d7a8967d931df0cacda81 SHA-256: 6885392b5cba0a3d0e16fd6a1aae405f444f21383dae27dc4b7f0efa11613970
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to compromised CMS upload storage. The ML classifier and ClamAV both flagged this PDF as malicious, indicating a high likelihood of phishing or malware distribution. The document body is unreadable, but the heuristic firings strongly suggest a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://designclarf.it/file/tanalof.pdf In PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/8c33e009ddb8c36acb5cc8f769f90c6a/29633791970.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/42737237718.pdfIn PDF document text
    • http://sieuthikhoacaocap.vn/upload/files/83808687570.pdfIn PDF document text
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/v954tro19abdld9nuq34f7oqqc/79838784658.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/poneboguxomiz.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/a5c5dc88915d79aec94d5fd4f3a12015/39528629718.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082f1381405a---rijafibozi.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be7338386fd---goxazubo.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/tf1qi0j92l54cts2uopk1nfk9g/13699444318.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/xirovix.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/1d5d506p1sj91rclfkg5c1m05g/98371765066.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/316fe33698b9cd848c0b4217732d76c9/64282475971.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/eb8qbg9reh9tm46titin71rno5/xegifejejomo.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/22717331518.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/04pj6bim1vh19kkbgt8mnsc1q3/93190863126.pdfIn PDF document text
    • https://p1gtac.com/uploader/files/gamufaxozovekedovaberama.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c06f694e94f---bezulirapefid.pdfIn PDF document text
    • https://agatanorek.com/files/file/38091038131.pdfIn PDF document text
    • http://planetamama.ru/files/file/33139893024.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b6a2b0e58da---lexojolux.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/3f7501b158add8c99e3d248bbd8311e2/kegodobijavirifanus.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c4a0c15cb97---82491181848.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/dasesopopotinatim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=tribes+and+empires+storm+of+prophecy+novelPDF 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0001af45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF45 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001c757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C757 18656 bytes
SHA-256: c9f21fea6f5d8f6f7ec3160efeb996975d4bd858263f19715178dc85e6489595
font_02_sfnt_off0001f76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F76B 11168 bytes
SHA-256: cc7d12f50094b314ec22b93aca4a3acafb724f18e7ebab84e9d2b6553fad6c90

Open this report in the interactive analyzer, or submit your own file for analysis.