Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8eb49e0235962c…

MALICIOUS

PDF

84.7 KB Created: 2021-07-27 05:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4a75848d6d3931044420572b1359e6b4 SHA-1: be8f1ece33935c7348d838564e934612425d9fd9 SHA-256: 7c8eb49e0235962c35e8aa945d4e87de0ab2800118b87656c24afe97b45c5af8
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://veivel.com/userfiles/file/76679367390.pdf In PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/207942b23952bc7474cc895f4cd5fa4e/74007063311.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/63965514237.pdfIn PDF document text
    • https://astek-telem.fr/userfiles/file/29998502862.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/fogujegaromozulupasediv.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/c9cdf2686d874fd59cbc526ff9cffa94/rifijedumuxunogogadide.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/1d59b6501981931b4a2cb3fd5b640b1a/fezagorusozeduraxubose.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/18766170430.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/sawadi.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb0b6103e8c---gigosuvafomevovopus.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/beduxavefififutikikiw.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e81360c3568---jedusiluvokenef.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/potosave.pdfIn PDF document text
    • http://gldbirdgel.com/user_img/files/31325717629.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160f964a79602c---zekerokojomakilodijimadus.pdfIn PDF document text
    • http://helpibr.org/clients/f/fe/feaff840d005acecac0f151e8679c8db/File/80476902312.pdfIn PDF document text
    • http://cbwmd.com/uploads/Files/17228855904.pdfIn PDF document text
    • http://rinsacars.com/files/others/8157388532.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/qlcdvmc6e56adnjv1pa0sqqecj/31238734513.pdfIn PDF document text
    • http://castanienfamily.com/clients/74558/File/bederesemaligob.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/7v967hs95v9nu9cp2t7j4num92/winodubudulurorinabe.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/d3d8ee80a24782b0a1974d54d6d7b24b/xonezivaxen.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c79dda727bb599381fae642679d8d282/zagisogolon.pdfIn PDF document text
    • https://tipresentoio.it/images/file/52665245019.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b71a36545e---fuzapogorajugodakazum.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=cahier+graphisme+moyenne+section+pdfPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD96 20780 bytes
SHA-256: 06d7b003b8af8a33ef9aad8bdaf5a4fa939809ac9626c745c0f647d7db083473
font_01_sfnt_off000111ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000129c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129C3 11164 bytes
SHA-256: c90447f22b1e67464aebb630353e2dc60658f7491e1cff458fb5de84dc586894

Open this report in the interactive analyzer, or submit your own file for analysis.