Malicious PDF — malware analysis report

Static analysis result for SHA-256 02eddf6bb1265feb…

MALICIOUS

PDF

71.7 KB Created: 2021-09-08 17:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: fd145afddd7383dd200b655b2b4d80a7 SHA-1: ab7222a431b44677a4a613ffa46191c7772343d3 SHA-256: 02eddf6bb1265feb4ac559e0df51b57b5f78b27788048a5c74dab116d00ebd9a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are hosted on disposable or compromised domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5610

Heuristics 5

  • 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
  • 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://jocoseatee.com/userfiles/files/pelavasupilifovesojavowup.pdf In PDF document text
    • http://yuqiaohome.com/uploads/files/202108312356469976.pdfIn PDF document text
    • http://tayles.com/uploaded/dijezinakafuvegebapevof.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/tixemowifejumo.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133dff9472d2---89559394442.pdfIn PDF document text
    • https://tl-systems.hu/files/files/devopadanoletiniw.pdfIn PDF document text
    • https://venusnvs.com/userfiles/file/74812346672.pdfIn PDF document text
    • https://conrays.ru/f/data/dulabidefinaw.pdfIn PDF document text
    • http://yuanhebiotech.com/upload/files/legarigur.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109042000346147.pdfIn PDF document text
    • http://htwy.com/upload/file/vowukebaditowule.pdfIn PDF document text
    • http://dmychadla.eu/UserFiles/File/famujumiratajodeluli.pdfIn PDF document text
    • http://77owship.netsociality.com/upload/files/70433207921.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/8be5fb0ff673ec2b43876c3d404f7de3/bewugadelile.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/31813635287.pdfIn PDF document text
    • https://bdprescription.com/ci/userfiles/files/80565471551.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/rumepevezaxawupo.pdfIn PDF document text
    • http://teleserviciomalaga.com/ckfinder/userfiles/files/gejibizipovubavenitanida.pdfIn PDF document text
    • https://hsse.hssanesteban.cl/files/dosigodogevurepemem.pdfIn PDF document text
    • http://splogservice.ru/content/files/78096551072.pdfIn PDF document text
    • http://e-hematologica.pl/users/file/fezelijuroxetebewizob.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/eou07u5nod9c0vd8mh7aphljq0/lifaxiguzakabuvuguparebu.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16135b4b17ffe8---71877363119.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=44+phonetic+symbols+with+examples+pdfPDF link annotation
    • 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_off0000bf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF59 18084 bytes
SHA-256: d84c604703d9e73eb281b71f6a63ea124d71040f1be2d405b07614374f368716
font_01_sfnt_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 11208 bytes
SHA-256: fc5b3d019b9d2f8370e127ad5fe83d6b803f770a196c77043eb9a44b07f3f360
font_02_sfnt_off000107b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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