Malicious PDF — malware analysis report

Static analysis result for SHA-256 e714511ab98dfaea…

MALICIOUS

PDF

89.3 KB Created: 2021-06-26 18:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ecc8cdcdc97a2b02c27d48c86845e432 SHA-1: 5d8aa002244f2a0a5a1f274a65ce942b487ee967 SHA-256: e714511ab98dfaea43932428b377e578237bfffcf70543886b003a85e7a44e4b
196 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It functions as a link farm, directing users to various compromised WordPress sites hosting further malicious PDFs, likely to facilitate phishing or malware distribution. The document's structure and heuristic firings strongly suggest an attempt to deceive users into believing they are entitled to a prize or parcel, requiring them to click malicious links to proceed.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/7c3fddc6c9811005fd051ebaf88938f5/wobonorepowuzutob.pdf
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/19494657876eb188cb6222d7a70e57aa/bewelenekatoma.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4d8bc30f1ca6c3b462946b8bb76f68af/misibonutadifanalas.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/db8d32d34c0ddfdda5435d308fbcfcaa/ribame.pdf
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/44142bba5be5e0b974aa87f16296959a/53208522606.pdf
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160a284815aa8a---42471741013.pdf
    • http://omonetach.pl/foto/ilustracje/file/wuxepoledamazuxozowupi.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160826845533bc---22983311390.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093d3d87aec3---17667594385.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1608514df38af0---xatemevofunodagujixifir.pdf
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/1306dd68eea211c8e072ab787e855c6e/topeda.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/09cac158225e7c3a4848403b350d030e/xiraf.pdf
    • http://bahtiyardishekimi.com/fckfiles/file/xalajajawobogovemig.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077286e21d22---82316882207.pdf
    • http://screen.by/images/file/nexikusad.pdf
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/5d6c94d295a8f45e234427d575b434c5/ferolijegisuwajipoligod.pdf
    • https://cr2tek.com/userfiles/Proj_Name//files/6333638767.pdf
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1bec5a181---vebelu.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1b6f93f48---sitesosisezerowerobewuk.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/75dbe6d76543a5225006498d1188552c/53409990645.pdf
    • https://vishalahospitality.com/ckfinder/userfiles/files/13381899344.pdf
    • http://mea-travel.pl/userfiles/file/94940517274.pdf
    • http://viermaalh.nl/Bottesteyn/Site/afbeeldingen/file/27956815182.pdf
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c981c37f14b---47527642306.pdf
    • http://billsky.ee/files/file/70744896118.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=average+salary+of+tv+news+anchor
    • 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_off0000f8e1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E1 16792 bytes
font_01_sfnt_off000110f3.bin
33a0322e9ca309238ebf87359fb844f417c8eb9147fcf1731dcc85ee9300acc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110F3 17648 bytes
font_02_sfnt_off00013f28.bin
2ed2583cf3e4847fe2f5a57745742b2201f7b0849bde9d142500e2001723bbce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F28 10772 bytes

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