Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2a3a703495ad6f…

MALICIOUS

PDF

80.2 KB Created: 2021-09-03 07:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 361950ad7abcf028641c5af379628b4a SHA-1: 9f30efbbfe919bf72f3151603e20aef7eb3daa61 SHA-256: df2a3a703495ad6f922cbb6dcec1d69dec1a0d28d6b81da244fadd792fa4a529
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to download other malicious PDF files hosted on compromised websites, disguised as a PDF to word converter. The presence of numerous external URIs and link farms suggests an attempt to distribute further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a548958c0db---sevuwegagapebekewuna.pdf In PDF document text
    • http://currycornersugarland.com/admin/images/file/kaxadevokewesu.pdfIn PDF document text
    • http://slavutich-media.ru/userfiles/file/lerepisiduviduninopefuz.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160af69d43b296---nojamoxamew.pdfIn PDF document text
    • http://cabin4kids.org/clients/0/05/050cd0fff5f75fdfd14851583cc0de74/File/rajidozukuzowofarusevo.pdfIn PDF document text
    • http://win-sonic.com/kida2018/ck_imgs/files/musogowefelemanir.pdfIn PDF document text
    • http://polesprogettazioni.com/userfiles/files/1093376203.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612c4c0a980ce---78358873650.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/d69b9c1b4d9d4ace8e36e043350cfe9d/sisalanika.pdfIn PDF document text
    • https://autopsrus.com/ckfinder/userfiles/files/28184577924.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/1668strc1rrcc2ko8pjmeaqrn0/10761593358.pdfIn PDF document text
    • http://pinedafoundation.org/imageuploads/file/dijafol.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/b4c17fb422a287768c8d54dfcd3412df/jonaxemuwetavajobutez.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/69450654721.pdfIn PDF document text
    • http://ingmarcofaedi.com/userfiles/files/80934957464.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f2ceda9eb---gadiwuvotovewubimu.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/0ce1dfd95f6d0a79013b59c3e2852e04/42613000169.pdfIn PDF document text
    • http://improntediteatro.it/userfiles/files/87067157620.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/94617759050.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1607d72852339e---51065790930.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/beab03aa86734a49ce7360701701feb7/siroxul.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-8-10/20210810001650456030.pdfIn PDF document text
    • http://elm3rad.com/file/19732524162.pdfIn PDF document text
    • http://overtonnation.com/clients/f/f9/f97855507a39dfa58978186db9bff07a/File/dexukakazudolomogevopido.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/13570069107.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b84d772447---29738334140.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=pdf+to+word+converter+free+download+trial+versionPDF 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_off0000d481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD481 17300 bytes
SHA-256: f8d17794990c186cc927ddbc7ee32d414a744e3a9a303dff860e5bdb65ca7c84
font_01_sfnt_off00010177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10177 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001198e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198E 10620 bytes
SHA-256: 5d7d4543975c7c2c53718dd4d28abff6694c8b69952a0d63cdefb763ab84e7ef

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