Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e57cc5ef4cadc9…

MALICIOUS

PDF

114.3 KB Created: 2021-06-26 03:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 40b7796f58423c18175c2ae0c350bdd9 SHA-1: 7ef9fb58ffa8468a15f6bcc5519f5e8ac55df1e3 SHA-256: 76e57cc5ef4cadc9761638859ae9eccd53ff89ee5de71bb36cb3be61bbd37c2e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam lure. It contains numerous links to PDFs hosted on compromised websites, suggesting an attempt to distribute further malicious content or phish users. The document body is heavily obfuscated and unreadable, providing no direct textual clues, but the heuristic firings strongly indicate a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/fc50641b49baa3803808837307e8a18a/loguxegugukukinina.pdf
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/107c5ade3dd313c3d9f0940b2af4b39e/futedoroxapuxit.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/s2snhsccj3oi24eseh8d5l2rls/20350451755.pdf
    • https://parfumzone.ro/files/file/39394259530.pdf
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b54ca2b23d4---levilobupakapafifom.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab994b39f8f---83051471112.pdf
    • https://acrgroup.nl/userfiles/file/1710826627.pdf
    • http://seanmore.com/userData/board/file/68647900549.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160826b19b997a---29658838938.pdf
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bec6c43395---vipapadejewaxelu.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16085ccaedb6fb---lotorowasanasozese.pdf
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8eaf91de34---zexofoxaziwi.pdf
    • http://www.aadhar-interior.com/userfiles/file/37328236244.pdf
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807c770b3f2---xopuridimukekiruboge.pdf
    • http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/xinikivisopeze.pdf
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd3f2b976a---30359452591.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc9c8123ac---76515910910.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb94d3cb41---kafijomixopojifokunefuj.pdf
    • http://silesiacapital.eu/data/file/23428073026.pdf
    • https://sankohomestay.com/userfiles/files/karuninirabemivozejuke.pdf
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebc841bcd9---weliramiromafivedoj.pdf
    • http://bioscipublisher.com/files/upfiles/file/mamif.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b29d99a5e3---demoronofogudumarawuzon.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=which+vp+became+president
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015c3f.bin
00a7c0095ce6854c1becf61c1cfc06f769f6575e9659bd80420bc929e958d169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C3F 17504 bytes
font_01_sfnt_off00018a02.bin
2c0876e27c042a0c91e3dcf34c56d2269088edda9c9d91e0e043e01b8adedee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A02 10812 bytes
font_02_sfnt_off0001a28f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A28F 16792 bytes

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