Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f3e5a3ff3e6873…

MALICIOUS

PDF

96.8 KB Created: 2021-08-07 21:54:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 5b3d71d8b529fbfc6ed2677fad6157ff SHA-1: e8639de6b79034cd6f4faabf7c5537e436c4c65a SHA-256: 49f3e5a3ff3e68730bc427869b137c463a6ece7577c8b3656ae59b848ae48c1e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or are part of a link farm hosted on disposable domains. The primary purpose appears to be redirecting users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://nomylo.ru/uplcv?utm_term=beach+buggy+racing+pro+apk+free+purchase PDF link annotation
    • https://amzentransportationindustries.com/admin/imagetemp1/file/binizalasadew.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/gofiwo.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc63a356507---lidadarinufilewukome.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/11114500656.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/xawenitiwewolazirukoguzim.pdfIn PDF document text
    • http://plnjl.com/userfiles/files/jejova.pdfIn PDF document text
    • https://briljant-maleri.se/UserFiles/files/sevabususitowolanefut.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/79450312119.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/50628303236.pdfIn PDF document text
    • https://bilalyapidekorasyon.com/userfiles/file/72260789041.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/704b7e88a8e02f051e9111bb5cd011f5/47362010448.pdfIn PDF document text
    • https://tidaksusah.com/contents//files/ralig.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/6abaca3d630367691405e1be535b5c7b/26533139942.pdfIn PDF document text
    • https://lysgaards.com/ckfinder/userfiles/files/lejodeteb.pdfIn PDF document text
    • http://benrassam.com/uploads/files/mutop.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/57219324337.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/48388721601.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/5168dc5506a05fb65f51697b02620ec7/74333546292.pdfIn PDF document text
    • http://transbur.ru/admin/ckfinder/userfiles/files/2736694412.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/puduvenukuvazexa.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f1b8a06a6f6---12029750435.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/l8md9ba9q2j3th8qmlmhb7nau1/rebukixemema.pdfIn PDF document text
    • https://www.disbel.es//ckfinder/userfiles/files/73098985280.pdfIn PDF document text
    • http://wrhs1967.org/clients/6/61/617565fc8afb9cc6d18abf932d248b7a/File/kilupuz.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721633869fa---fezevu.pdfIn 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://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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000111d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D9 11112 bytes
SHA-256: 4c39ffd84ddcf6b583c99dc334328c09469a4fa31456054ca8dc8ce4b0102c68
font_02_sfnt_off00012b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B87 18080 bytes
SHA-256: 1c2611c4d0b49e922ba5b782a8b8605c292e9efe98c146e169b0cbce76d762b1
font_03_sfnt_off00015b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B41 16744 bytes
SHA-256: 49a1b5f3a6acdba0ca093845087df65f0a1308c995af20e9b46370b4d0aae1af

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