Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc00d149c16a786…

MALICIOUS

PDF

84.8 KB Created: 2021-09-20 03:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 46a5f0db8d9ccc9d64245c6e06ef62fd SHA-1: 3b55eaf7570943e7dcd240020da0de0c175b24e3 SHA-256: fcc00d149c16a7862fe0e19676ca711dcc3fbb39e4f4b515e8e7d9d445a37abc
264 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs, many of which are hosted on disposable domains or compromised CMS uploads, indicating a phishing or redirection attempt. Heuristics specifically flag it as a 'Payment redirection / bank-detail change lure' and a 'Recovery secret / private key request', strongly suggesting a business email compromise (BEC) or credential harvesting scheme. The embedded JavaScript likely facilitates the redirection or collection of user input.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.gitialiganjlko.org/ckfinder/userfiles/files/68514706911.pdf In PDF document text
    • https://tasivn.com/upload/ck/files/34506620370.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/mijiwuzizujifolabotoge.pdfIn PDF document text
    • https://markyatirim.com/resimler/files/2015558239.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e73572bc9---63939418283.pdfIn PDF document text
    • http://skupka54.ru/upload/m/bodevunatipijex.pdfIn PDF document text
    • https://cbconsulting112.ca/userfiles/files/jugeniwibib.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/xejewiwidewix.pdfIn PDF document text
    • http://descanso.verareyes.com/ckfinder/userfiles/files/75055658012.pdfIn PDF document text
    • https://tranthachcaodanang.com/uploads/image/files/12836802853.pdfIn PDF document text
    • http://daglichtfilters.nl/ckfinder/userfiles/files/dozodekanezujug.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/gazoluwagojamuwafimowib.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130dbb4ba8fd---30795497985.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/n7mdj3ql5b24miheodguvdr9kk/xinenib.pdfIn PDF document text
    • http://instit.ac/ckfinder/userfiles/files/53935638259.pdfIn PDF document text
    • http://hot-pol.com/images/file/79321078177.pdfIn PDF document text
    • http://pro-group.ru/userfiles/file/98608163109.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/6739518326.pdfIn PDF document text
    • http://samtekelektrik.com/files/wuzurix.pdfIn PDF document text
    • https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/funuwazapagede.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/82880438540.pdfIn PDF document text
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/46951432056.pdfIn PDF document text
    • https://endobible.com/userfiles/file/27311918094.pdfIn PDF document text
    • http://soskuwait.com/outscapes/admin/ckeditor/uploads/ck/files/88009656010.pdfIn PDF document text
    • http://ikuma-car.com/js/upload/files/97568995332.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=android+sftp+syncPDF 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD968 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17A 20348 bytes
SHA-256: c6d8d99d05f9fc03de7613e9a09484244f2e71658309fcd32ebcc155bf512cfb
font_02_sfnt_off000125a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A1 10368 bytes
SHA-256: 4ffb6549ea3bfedc8b4ef3fa3f0e7430f126c7fe309ddd9c879b87d9174b59ca
font_03_sfnt_off00013d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D30 1840 bytes
SHA-256: e11639021ae82bc81d66597892112dbefd7f2cb67f426bbebb6fc3c29591e729

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