Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a7ce3dd44b015b…

MALICIOUS

PDF

83.9 KB Created: 2021-09-19 22:14:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b53b4fc5e51d7296010634a6dd29fb39 SHA-1: 8fbf7aa9f03d9d5be9666d05a8785bb5dd5ffcb1 SHA-256: a4a7ce3dd44b015bce2bd8025d33a9c2e902581f0a69de50450ecccbaa4fd548
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting an attempt to distribute further malicious content or phish users. The document's structure and content strongly indicate a lure for a lottery or parcel delivery scam, aiming to trick users into paying fees.

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://philabc.ru/uplcv?utm_term=pelli+choopulu+full+movie
    • https://inprovitperu.com/ckfinder/userfiles/files/xujamujevejetezowokane.pdf
    • https://jensbrode.de/files/file/49983715458.pdf
    • http://adbrf.com/files/fckeditor/file/20759208406145d01d4fafe.pdf
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/mitazokebolawige.pdf
    • http://skrabl.pl/www/rpbd/fck/file/rizujeko.pdf
    • https://danielfelber.ch/userfiles/file/lefososimosaduxukupizomob.pdf
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161382709584a1---xusajepowomeragub.pdf
    • https://dycmc.com/DATA/upload/files/202109110404032206.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614313d0372d0---jaxubilaruvo.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1614520243fbdb---wosugujepimiwex.pdf
    • http://arniuniversity.in/ci/userfiles/files/simorusejebalukizogisuvux.pdf
    • http://serting.eu/userfiles/files/xowujafedekos.pdf
    • http://packamate.com/userfiles/95989853414.pdf
    • http://kvarkeno56.ru/userfiles/file/debenanuvizipir.pdf
    • http://liebherr-tr.com/userfiles/file/gazebovivomamakezipebos.pdf
    • https://songhongresort.com/img/files/zosasejanidumugimavaforid.pdf
    • http://smolninskayahotel.com/userfiles/file/88026126120.pdf
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16141c92838878---xudipivijijenodapumefuwi.pdf
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/poluremijibetezuxutetemom.pdf
    • http://westernmaki.com/uploads/files/67412281606.pdf
    • http://naturalwonders.com/uploads/files/73073488997.pdf
    • http://podushka.by/files/files/98711110663.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161370b174f7b8---76373973342.pdf
    • 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_off0000e29a.bin
4a2dba948e07c041c94ebb257c86305d9f8781b06cc233881454c5ee424e9a1f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE29A 10280 bytes
font_01_sfnt_off0000f9b5.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B5 16792 bytes
font_02_sfnt_off000111c7.bin
ba65dec1e233fe27d4a866ab56e3a064707f210923352c9638f836e042188f75
pdf-font-stream PDF embedded font (sfnt) at offset 0x111C7 18488 bytes