Malicious PDF — malware analysis report

Static analysis result for SHA-256 e980b0d868d589cd…

MALICIOUS

PDF

74.2 KB Created: 2021-09-14 03:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2e17df55ea75b7b4e75103e5d64ada0f SHA-1: fc20e3d8561dd9204e8d517efce8945f7d1899d0 SHA-256: e980b0d868d589cdc0032ac6d55704d2554b99a99999331d881a97362d57c9e0
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pokewaveanaheim.com/uploads/files/silubaratigilulovakelijok.pdf In PDF document text
    • https://soi.icami.mx/ckfinder/userfiles/files/sorutobevudukazujitajok.pdfIn PDF document text
    • https://rizecanreklam.com/images/file/61010348506.pdfIn PDF document text
    • http://burbank.kopanramen.com/uploads/files/64136938594.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/25237324936.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed21b03aaa---lokalatudagak.pdfIn PDF document text
    • https://trompis-tondschungel.de/userfiles/file/mozekoselaj.pdfIn PDF document text
    • http://playoz.com/ckfinder/userfiles/files/jagisinipirapemofikixe.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/pob3oosfo04ouprnmsnc3rilp7/lifozuwoduvoluzojajowozeb.pdfIn PDF document text
    • http://hsi-international.com/ckfinder/userfiles/files/jipolaguwivevosu.pdfIn PDF document text
    • http://mgrima.com/files/file/nodatugoxulariposoporen.pdfIn PDF document text
    • https://datawire.gr/files/files/49110938554.pdfIn PDF document text
    • http://aptekarynek.pl/zdjecia/fck/file/nexumoposadiregaxutup.pdfIn PDF document text
    • https://zerling.eu/nico/images/files/rejat.pdfIn PDF document text
    • http://mentaplywood.com/images_upload/files/nekopox.pdfIn PDF document text
    • http://evrofurnitura.by/elax-furnitura.ru/uploads/files/binexixositefodawa.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16139b9d0ea01d---porukupu.pdfPDF link annotation
    • https://mimpishio2.com/contents/files/vadazufiwebodemowut.pdfIn PDF document text
    • http://zhihepvb.com/upload/ckimg/files/202109140707161346.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/53632313504.pdfIn PDF document text
    • https://samngaimarble.com/html_upload/file/nenunolax.pdfIn PDF document text
    • http://olynskiconstruction.com/pics/file/18774994577.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/2tbt2gpdapgt1gokrbjejuj3nr/2492246190.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/l4rtibjh5ilp34t5crmfrfujl4/judanegiwopij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=minecraft+pocket+edition+last+version+apkPDF 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_off0000bfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE2 16548 bytes
SHA-256: b089f7516461cacf910623db20102d1052ae759224f3e27dd76db89e34f86935
font_01_sfnt_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10233 10764 bytes
SHA-256: 10008df9d7f23eacd187bc83afae170debf67119e4ccbcce89e8e55e596d20ef

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