Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade604bdae504556…

MALICIOUS

PDF

89.3 KB Created: 2021-07-03 03:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b2607ca04c6c831b4a26784bd66b1c88 SHA-1: ba6d1434e6a5f2bd1117b45fe2f33e3594cbc037 SHA-256: ade604bdae50455667b18b340af4d221b004e795af7f1b61b1cb98bf3364a75e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains numerous links pointing to compromised websites, indicating a likely phishing or malware distribution scheme. The presence of external URIs and link farms on disposable hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/61ed90d4a04b9b4535a16167429b1561/2701502067.pdf
    • https://vico-domrep.com/ckfinder/userfiles/files/95155714302.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/37b55846998189915e05c7de3ba0570f/pugukelovoxelenufawa.pdf
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160c03dab4a000---xizelixu.pdf
    • http://christopherdallo.com/file/8247514207.pdf
    • http://verynailscm.com/user_img/file/sexidawusif.pdf
    • http://www.deco-interieure.com/userfiles/file/kilufisiguzej.pdf
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/81nhch34b7j5fsdtq8k509g3on/59545319603.pdf
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812bf08ca97---23844176972.pdf
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/ci4njpk98013usaflh3ts8uc96/67132152258.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608569f0d5de2---togosedokafumesugufeb.pdf
    • https://allcreaturesinc.com/files/files/widaxerezanozefiwuzizub.pdf
    • https://securityguardsupply.com/php/uploads/file/68067864928.pdf
    • http://pallenberg-busreisen.de/uploads/files/xutiruf.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607580b353307---neromefade.pdf
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/5d1e33e1c8cac23f9b4281a1caa378fc/82315181133.pdf
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/c6f90e798ed67b715a8cdd92adcb1602/vepogidulutakodefovugemuf.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609234cf571f6---kobubabumolujororexobeka.pdf
    • http://arohitourandtravels.com/userfiles/file/bonigoketovudebetimul.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/6ba084ebe7799c62deda9d6a18b87bd3/87437987759.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a257ede39be---36839500022.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adf49daa30d---51502157391.pdf
    • https://zapcdn.space/web/img/podborky/files/35465679608.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081849dac0d2---xasaxeliwiwupogukidi.pdf
    • https://megashina24.ru/files/files/53343721652.pdf
    • http://pronobile.de/catalog/file/82654880928.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=2+years+ago+in+spanish
    • 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_off0000f73d.bin
eb75d55f201a99ace52f448b666293f0b20726496ceb47a2901144a83fac29f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF73D 18772 bytes
font_01_sfnt_off000127e8.bin
97010229a63fa8d95e8c0e2b18dfc91c36156e2ce7053e8e1ec2f1ce797dc79b
pdf-font-stream PDF embedded font (sfnt) at offset 0x127E8 10524 bytes
font_02_sfnt_off00013fda.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13FDA 16792 bytes