Malicious PDF — malware analysis report

Static analysis result for SHA-256 630bd334729bd651…

MALICIOUS

PDF

101.1 KB Created: 2021-07-07 23:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: fd4618ac8d4607eed7affe4810e13d2b SHA-1: bf02822835d11deafca464a23d1f65cab492c574 SHA-256: 630bd334729bd651b523a1f4abeb462f50bee54ba5a9b5f4b8fe743a121f914d
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of multiple links on disposable hosting and compromised CMS upload storage further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/922egalfl7nvuuv2k1brmqmeh6/lafavijoguzuw.pdf In PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/38bd74cedb959fc406d82a54a9164a10/pasor.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/708e26136821e44f814c908dc2a06b07/rikopogowisogi.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8e8a634e1---somivagebuzabixa.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cedc52686bd---livuzixugeju.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5620cd4ba---5443269183.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1606d258b70bea---lilijigesarul.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/291722181824.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/24181614964.pdfIn PDF document text
    • https://avonsteel.com/UserFiles/file/11445276195.pdfIn PDF document text
    • http://liccuza.ro/stiri_files/file/raluzenonomopizi.pdfIn PDF document text
    • https://dietacud.eu/upload/file/9730461278.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/e77059bd9cb1f81b450e6ee00600fb9c/lekiwe.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/milajuparakexa.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768455bd41f---lafubafebesaruf.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c5e73d4dc---xizovoxudejewejokebovuj.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4dfa564ce3---goromadivugepawedimo.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/c43e4de34476e3ab06dc9b035f9e14e6/32797606236.pdfIn PDF document text
    • https://egca.fr/userfiles/file/fiviludisasugilor.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a037895242d---loburofikelumegenitudek.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/bafetebejujonufidiwewovi.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a44c624b21f---zidapobawazifoparorigujuw.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/m405srd2toqvedt34abuu97in1/dowuwowugalatekesewexig.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/a5d00bf91298aae21a8c92da12a34db8/jofiladan.pdfIn PDF document text
    • http://zbraneklapka.cz/ckfinder/userfiles/files/xubilekexanox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=itching+of+body+after+bathPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F1 17048 bytes
SHA-256: 865019ed0d2a493fb27b128f5db21e62db69b9d9a854343048ef51a4fe4d3d82
font_01_sfnt_off000156b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16ECD 10744 bytes
SHA-256: 9ef790d0c07dd98df1d22ce9625433ae54bfd869b53b6b1939e73cb38a1d8bfe

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