Malicious PDF — malware analysis report

Static analysis result for SHA-256 f882eb787ff62db0…

MALICIOUS

PDF

81.7 KB Created: 2021-09-10 08:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 984a96b4b5f997eecce786adc51a1e26 SHA-1: 8f30c9ba4341a00542d851e791e6cd4067e14973 SHA-256: f882eb787ff62db01554a9683d75efd14d975d7187b6172deca9954c6d1b0c58
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://irlanc.ru/uplcv?utm_term=android+video+player+subtitles PDF link annotation
    • https://primer-spb.ru/files/files/xilidovutulofedinumil.pdfIn PDF document text
    • http://ontis.sk/editor_uploads/system/files/wivubuma.pdfIn PDF document text
    • https://nazragame.com/calisma2/files/uploads/mikomobeziwitowuno.pdfIn PDF document text
    • https://magicdiscoradio.hu/userfiles/file/mesarukukumumatut.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/73902732559.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/12914822869.pdfIn PDF document text
    • http://1day2night.com/UserFiles/file/71854712266.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/voxasikebixepu.pdfIn PDF document text
    • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/tazaluzuxiwa.pdfIn PDF document text
    • https://xylemleads.com/userfiles/file/83883504244.pdfIn PDF document text
    • http://aquatherm-graz.at/files/74523770568.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/nogixalinag.pdfIn PDF document text
    • http://akcompany.vn/uploads/userfiles/file/vimojiduzupogabalexura.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/90164556645.pdfIn PDF document text
    • http://bndweb.nl/upload/files/10799769361.pdfIn PDF document text
    • http://finproekt-msk.ru/userfiles/file/titig.pdfIn PDF document text
    • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/mezovux.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/roxuguranevulotabex.pdfIn PDF document text
    • https://bakwanudang.com/contents/files/52742620713.pdfIn PDF document text
    • http://kanizsakran.hu/userfiles/file/3836797957.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/dilufibon.pdfIn PDF document text
    • http://abpaluso.com/upload/file/76450054516.pdfIn PDF document text
    • http://baaningdoi.com/file_media/file_image/file/76737258736.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/laledonevamuzafuvupam.pdfIn PDF document text
    • 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_off0000dca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA5 16888 bytes
SHA-256: 7dedf7455eab44cbcc36b8afc1fab0bd739da513f2b6d600949c11fbae257582
font_01_sfnt_off0001082d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082D 10788 bytes
SHA-256: 30fefe76f3c8b111365cc42a6deaa07ef10b06fdc5e187a9258036a4b7cfd1e2
font_02_sfnt_off000120fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120FB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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