Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b9b476ee920becc…

MALICIOUS

PDF

108.0 KB Created: 2021-06-26 02:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6b7de1dba266ff0bd999a56fbb7ee232 SHA-1: b3f509359f9e119849f731fe42d58343bc54a2f3 SHA-256: 2b9b476ee920becc455b75ca0ae9fd8a4a71946b83697d341cbfd9bed9b59f6e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for malicious content or phishing pages. The presence of these links suggests an attempt to lure users into downloading further malware or visiting malicious sites, aligning with a phishing or malware distribution campaign.

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://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c98855b44f1---27685146350.pdf In PDF document text
    • https://radmangroup-ye.com/rgfiles/file/57695909504.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/9ea85acinr8vk4l2820mt3ee2e/27347072406.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bda2805c6---85471599086.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b822e044806---76628872907.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/99426868211.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/eef5ca9b76a44d11f5edb30c09a0db1c/61788159317.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/rimabotat.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082080c18e44---retekanuturikimegejomida.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/85a94d16039b11200d4701f787759b6f/xenupovagesotusave.pdfIn PDF document text
    • http://moderncarrent.com/user_img/files/vatozupibat.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/45338085995.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9223bd6b6---89036181598.pdfIn PDF document text
    • https://smobiil.eu/userfiles/files/55851165812.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869663ccd43---23504305359.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/a91453278tp9c2f64mu77v8s3n/nujos.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16092cb3b498a9---pokupigonafewobixaja.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa56ecae6c---82505094386.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/tagafinewokuvexabumiwubi.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/1dd959cbafa43e6b546b31dc1e78e712/purozerikaxulodetosobo.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a49c1945af1---lanitaxanosikavewawimubav.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609111ca35eb8---75228997962.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ba7a9bca2---66116240320.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=23+year+old+virgin+malePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000143c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143C6 17780 bytes
SHA-256: 7b428b1dac6cc1e2c0df865737d344a879865c6a278eeb7525d193366498a0eb
font_01_sfnt_off00017251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17251 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A68 10700 bytes
SHA-256: 3173a3b6b9837854d826fbbe1dcdfc0536fbc865a999ed451efb6f3a981243fa

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