Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed6359a82e09532…

MALICIOUS

PDF

109.8 KB Created: 2021-08-05 18:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e4db6cc2d954d8f4cc4de7b2e4d2e1d4 SHA-1: 54ba04e1bca5dfc1bacdaaecea7d1ea458bf14e3 SHA-256: 1ed6359a82e09532a8aea05ece226d8f67fbac472adbffa108fd801dd8d1e9ba
156 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a URL with 'utm_term=watch+megan+is+missing+full+movie+online+free+123movies' suggests a lure for potentially pirated content, a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://medtek.vn/storage/file/pofobepabilovid.pdf In PDF document text
    • https://smartcirclegroup.com/userfiles/file/6802598929.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/21998827916.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab1ab4110e---17268292847.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/1gp3i9qs6qbu5a59gudqrm6027/39915244467.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/ligek.pdfIn PDF document text
    • http://ouhkpthaa.org/userfiles/mivakugesogidilejaweb.pdfIn PDF document text
    • http://zjpjxt.cn/upload/uploadfile/file/xiruwini.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/pofutijajaxazora.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/7f4f04523578a363dddec11da69a3015.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/875b824c118922de9f1bba667d907e6e/58973011452.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad8dfc8a9a---sobupetezakol.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents//files/tevivevekomuvugamazur.pdfIn PDF document text
    • http://mousike.it/img_ins/files/fegujaruwenimawisupa.pdfIn PDF document text
    • https://medprobr.com.br/wp-content/plugins/super-forms/uploads/php/files/51f5ccea84161d8aa5626a0f20b6040a/11283751507.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/mozenip.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/58880237099.pdfIn PDF document text
    • http://dui-antidote.com/images/userfiles/file/wotatukogalepuvorobizuf.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/25086598260e95c127d1b4.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/db01228b73a1c4f9f80ee867f4fbe502/nalife.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/27439def9cccb9543df7fb396e8557da/kofawo.pdfIn PDF document text
    • http://greenreunion.org/clients/f/fd/fd69eab1634eeea6368acebbe5d5cb0d/File/dejubugux.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/38f1dc1f92df1f4113c6e3303653249c/50089454358.pdfIn PDF document text
    • http://co-mit.com/uploads/files/20755518467.pdfIn PDF document text
    • https://schmitz.cz/res/file/tidotebot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=watch+megan+is+missing+full+movie+online+free+123moviesPDF 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_off000144e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144E6 18552 bytes
SHA-256: 93e476266b0f63730165654e8068535dfa7629bb81a5df06019d41b23d5e998e
font_01_sfnt_off0001751d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1751D 11288 bytes
SHA-256: 2aecad0b9c38ca563c11cc84b5a579deeacd0e1ee1a917f7e89a2e6580d8daf5
font_02_sfnt_off00018f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F9E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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