Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f3986dff2dd49d…

MALICIOUS

PDF

85.4 KB Created: 2021-09-19 01:35:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d2b518a297cdb95d17bf395f54b4cbee SHA-1: 3464f22e2ddc162398011e7907f5392d29a595dd SHA-256: 60f3986dff2dd49dc13db6d80b4c4a0c47747caa5235de470b8048156cfc29f1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a link farm with numerous URLs pointing to potentially compromised websites or disposable hosting, designed to redirect users. The presence of external URIs and link farm heuristics strongly suggests a malicious intent to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://oklogistic.lv/upload/file/52759999677.pdf In PDF document text
    • https://menokatea.in/ckfinder/userfiles/files/rorevusipigofefimumudika.pdfIn PDF document text
    • http://j1ent.com/userfiles/file/20210914084948.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/xovukutinezare.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e37692404---wedadezuzoporijipigat.pdfIn PDF document text
    • http://sheilahancock.net/blogfck/file/nonutuvapivenezowip.pdfIn PDF document text
    • https://livewireeventz.com/userfiles/file/81295664002.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/97234702886.pdfIn PDF document text
    • http://videlec.be/ressource/file/gakabikezafabunigenuloj.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/jetavoka.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/fejisig.pdfIn PDF document text
    • http://tyextractor.com/d/files/33312938349.pdfIn PDF document text
    • http://henca.com/files/details/file/81803652867.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614088a05e32e---garogukujuwapalodutemetef.pdfIn PDF document text
    • http://conditum.nl/userfiles/file/26926777388.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/xowotabo.pdfIn PDF document text
    • https://www.fyna.com.au/application/third_party/ckfinder/userfiles/files/nibabutefujom.pdfIn PDF document text
    • https://vinaconexmec.vn/uploads/news_file/bubezesanupetiwaleluw.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/48b5242ffc5b6486f0f31e13030cf6b0/82679597432.pdfIn PDF document text
    • https://penzion-palice.cz/content/bajolawelivopuvujetokogez.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/kiwujofogujozo.pdfIn PDF document text
    • http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/jajewus.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/gkd66opau34cgubnq684n753o2/1806772000.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/53645947493.pdfIn PDF document text
    • http://gpsputhuppally.com/userfiles/file/kamalomanavevadazar.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=geometry+dash+apk+full+version+2020PDF 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_off0000df31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF31 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF748 11416 bytes
SHA-256: ff7c710008920a0d0dd8d19870109366b6ae9ab9e9e5987df65fcbe27dc31d95
font_02_sfnt_off00011223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11223 20328 bytes
SHA-256: 106aa4e917d6fa05196650080115754e93cecb7b17cb4ce4871851783df65293

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