Malicious PDF — malware analysis report

Static analysis result for SHA-256 564ee246d4d8593a…

MALICIOUS

PDF

68.5 KB Created: 2021-06-19 22:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bbac13f0f287b42607c85177e47574e9 SHA-1: 47a714dea5694d43ff8c63d7ebf84420407a574e SHA-256: 564ee246d4d8593a63ac0c3726856dbd4380b34d319679a6ca8f67f22f42d70a
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to reference movie titles, likely as a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://advance-pack.com/editor_upload/file/20122355706.pdf In PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/f8c34158300c8d94d1d5b7bab22805d5/zefizumezomelaxuxuwulo.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160843b23aea11---13434430459.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a8d05f7feed9505b220a8edf156d7c9/vufawifunelakaletafewup.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/289d6ca485849068f2320fbc549c408d/85878754595.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/56108661417.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607199d8aa925---rijunedonotavanajur.pdfIn PDF document text
    • http://harasim.cz/uploaded/files/tegobufapajomepi.pdfIn PDF document text
    • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/2eafc8c2c2fa90ccef8c451a7e585e60/37825905324.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160afc0943dcc1---vadudigivepa.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/fd0e7bf98c63da3f400e8e27cfc5e420/79142716322.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4c20745941---96877404930.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609c77517330f---jugilodoneturawolimof.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/sikibubev.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/nukitazefu.pdfIn PDF document text
    • https://wickedcheesy.com/images/file/dikeleraxin.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/904466c57a0415549e123eddd1085a1e/2285972474.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/45425565496.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=madea+i+can+do+bad+all+by+myself+123moviesPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC1 5436 bytes
SHA-256: 0420fc76df1fa8e06ad71d9797c930fa0e30d9210526cab5d2e6eef6a478184b
font_01_sfnt_off0000d02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02D 10792 bytes
SHA-256: 9a88f53866d2b6fef39925e72f3596af220b7921259d4b6e871d366117736fcd
font_02_sfnt_off0000f4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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