Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd9f5ffafd106be…

MALICIOUS

PDF

76.5 KB Created: 2021-09-01 00:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 007cc677441b29bd5a10afea6808a0b9 SHA-1: 8e7ca349274328e09e9a2779b4f7f71c9366fd73 SHA-256: ebd9f5ffafd106bee6661ac2bec868d652162ab1deb999436d8d66cae0719e9e
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application T1204.002 Malicious Link

This PDF document exhibits characteristics of an advance-fee scam, including language related to lotteries, prizes, or parcel deliveries, and prompts the user to call a phone number. The document also contains numerous links to compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or phish for information. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://pistant.ru/uplcv?utm_term=phone+number+for+golden+dragon PDF link annotation
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160894b5a42293---85916150918.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/bf8d1c41d2a8ce339001bdf899bd8f17/rasuguwutovasas.pdfIn PDF document text
    • http://familiegravesen.dk/ckfinder/userfiles/files/95907442790.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/79780057873.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/19418213037.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3570eacdd---zifafu.pdfIn PDF document text
    • http://vinacafe-dalat.com/Images_upload/files/fubugunoramolutamireb.pdfIn PDF document text
    • http://work4shop.cz/userfiles/file/fojowogagirodejivu.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608375049160e---xalesagujav.pdfIn PDF document text
    • https://igescanada.com/ckfinder/userfiles/files/53689144640.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/menasezavadu.pdfIn PDF document text
    • https://scalper.ir/data/files/file/kexopow.pdfIn PDF document text
    • http://dongduong.net/Images_upload/files/18460425875.pdfIn PDF document text
    • http://asustainable.com/global/file/80618565081.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/6jldhgieat80o4640abhl3fj46/nelunuxewikomugo.pdfIn PDF document text
    • http://kelt.pl/userfiles/file/9921682924.pdfIn PDF document text
    • http://bigcool.net/webroot/img/files/76060910749.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/58049458956.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/70098429592.pdfIn PDF document text
    • https://humicdp.com/uploads/2021-07-19/images/files/84220899723.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/xonewewalelovibadatajozo.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088534e504ef---kidezoxipuw.pdfIn PDF document text
    • http://candientuvibra.com/images/file/sufibiwiniwogef.pdfIn PDF document text
    • 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_off0000c829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC829 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03B 17576 bytes
SHA-256: 3dae537aa7e9536d7b33dd4a231a08b923e14483b2c67581d5840195621869c1
font_02_sfnt_off00010d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0D 10684 bytes
SHA-256: a5e8ab1d22f39524d8b33d22870612f28b9c72ff798bc50e0a8dda592abed55e

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