Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a2a120216c4e01…

MALICIOUS

PDF

79.7 KB Created: 2021-09-09 00:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 87e2077544b53055d2f87336b315e91a SHA-1: cd2395e2f28ea51107f5880bdb69f10a4b5919cc SHA-256: f0a2a120216c4e01568522d092498fc841b45a9c5f61810f34d40a711e7fd230
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to potentially malicious domains, suggesting a link farm designed to redirect users to harmful content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a tactic to obscure the true destination of the links. No scripts were extracted, but the overall structure points to a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/vudapavusolol.pdf In PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/bcd0e4d273c3e9d164570ecc4d4d314e/62903599619.pdfIn PDF document text
    • http://www.stadion-zarya.ru/ckfinder/userfiles/files/gesonoju.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/99404699702.pdfIn PDF document text
    • http://cancercareresearch.com/userfiles/file/wepukowudinukabasitilupu.pdfIn PDF document text
    • http://nenayu.com/filespath/files/20210907040101.pdfIn PDF document text
    • https://hoongnau.com/upload/files/88621988835.pdfIn PDF document text
    • http://location-venise.com/italie_documents/files/zigufatereneja.pdfIn PDF document text
    • https://rt-totaalafbouw.nl/userfiles/file/68193927287.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/84551526879.pdfIn PDF document text
    • http://hanasushi6.com/uploads/files/51962092660.pdfIn PDF document text
    • http://woodlander.sk/grafika/file/wopasad.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/kesipe.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/70786491085.pdfIn PDF document text
    • http://royalwedding.jp/images/blog/file/nagatoxefokemen.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/nanawibigidenilijazeze.pdfIn PDF document text
    • http://nbc.com.vn/ckfinder/userfiles/files/18148392047.pdfIn PDF document text
    • https://drnanemilk.com/tctt/sites/aaa/file/mamajop.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/7205d701ee34c1433b842c5a93fc560d/56455303938.pdfIn PDF document text
    • http://emannsltd.com/userfiles/82343452782.pdfIn PDF document text
    • https://thehouseproduction.net/file/sawaxufor.pdfIn PDF document text
    • http://www.hausman.eu/images/wyswig_images/file/vojol.pdfIn PDF document text
    • http://mobiliteit.nu/files/32705727435.pdfIn PDF document text
    • https://dazhonghua1688.com/ckfinder/userfiles/files/tovijasob.pdfIn PDF document text
    • https://guijek.com/userfiles/file/28141772270.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=showbox+watch+tv+showsPDF 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://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_off0000d67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67C 10320 bytes
SHA-256: c5e5eef40fd06f8fea25b27dfd4a7a1f159c386ebf2baf949703603ccec5058d
font_01_sfnt_off0000ee02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE02 18012 bytes
SHA-256: bc69627bbac4f9b46d3ca5795f603dc41b5a8a7aca057fcb310423d1a7accae1
font_02_sfnt_off00011cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CC0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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