Malicious PDF — malware analysis report

Static analysis result for SHA-256 70094eae9e39cb76…

MALICIOUS

PDF

93.9 KB Created: 2021-07-06 10:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9c7468e40b2f34c59fe87523adb42ea0 SHA-1: d11bc32b4ad74efa7010abca73d10b4201d3f183 SHA-256: 70094eae9e39cb76e580e259d7a4ff3a896df5a72a5da699b4816fa1270432e6
196 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of an advance-fee scam, presenting a lure related to lotteries or prizes and parcel delivery requirements. While no scripts were explicitly extracted, the presence of numerous links to compromised CMS upload storage and disposable hosting suggests a mechanism for hosting malicious content or redirecting users. The ClamAV detection and ML classifier further support its malicious nature.

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 http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7913253b0---29969420130.pdf
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/426387ef544229a59acdc964e7841051/tibaxilomijosavulosewixeb.pdf
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0978d9083e---kulijikixerimepugebalude.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/bbae4afb74f04486413bf37e67e066a5/18182900512.pdf
    • http://paulsaperstein.com/userfiles/files/8278340169.pdf
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/9s5bf33uie1h37oimv182a730q/wejipi.pdf
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/zadirafelimoruzofefixuwa.pdf
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160bf50173dc93---tabadekexasew.pdf
    • http://aodaibooking.com/FileData/ckfinder/files/20210613_D04CD9F5EEE5F57E.pdf
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/rp2jdb7717hdn1ok0afkk9nf3c/xezafefabizarupi.pdf
    • http://anvlaw.com/userfiles/file/49544624398.pdf
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/pujuwidaxexavetix.pdf
    • http://ebslang.net/_UploadFile/Images/file/wigulozaninedegesive.pdf
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085641559bd5---gugogepowosupemoxumo.pdf
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608351f35dbed---mutax.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/affb038f5b2de4b591c999b685470173/85979299134.pdf
    • http://ketoanaca.com/uploads/image/files/20308895824.pdf
    • https://ikima.fr/uploads/file/ronopawinizebokoguzo.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075f5c51f589---numizakizoxurenejofonosil.pdf
    • http://strategie-online.net/catalogue_dynamique/file/papalidumazeladis.pdf
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c46004346---modopokumomoxu.pdf
    • http://diversecityuk.com/userfiles/file/dibakafifewe.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=japanese+new+year+lucky+bag
    • 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_off0000f797.bin
79d625fd69f1040443814ec6ab13284eaf441edc7476af02c4bfdb0a62996384
pdf-font-stream PDF embedded font (sfnt) at offset 0xF797 10760 bytes
font_01_sfnt_off00011060.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11060 16792 bytes
font_02_sfnt_off00012872.bin
4a9a9939a35fadce5d412f773f0b75dc7b009fdb50b46f44c4f0e7e5f99d9ae5
pdf-font-stream PDF embedded font (sfnt) at offset 0x12872 25928 bytes