Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a6fd524b355d08…

MALICIOUS

PDF

70.6 KB Created: 2021-10-02 11:27:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 8437da6a448afdf65c1f4145ac7f67e8 SHA-1: 5843a76ff2005e9345220ad77399e347fa786300 SHA-256: f0a6fd524b355d08f545e53638f28c354b81b2d9e97c3ecf13c4d4ef61ad8591
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection mechanism. The PDF structure and embedded content are indicative of a malicious document, likely intended to exploit vulnerabilities or trick users into visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://apartament-krokus.pl/userfiles/file/44437184746.pdf In PDF document text
    • http://autovoda.ru/upload/files/18498333895.pdfIn PDF document text
    • http://purofirstli.com/userfiles/files/rajosof.pdfIn PDF document text
    • http://boden.boj.se/uploads/userfiles/files/zukabuzimixonunukizusuzis.pdfIn PDF document text
    • http://lasantitosrestaurant.com/userfiles/file/33752360618.pdfIn PDF document text
    • http://arhive.np-sp.ru/img/file/kobegatodagozugab.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/tenumof.pdfIn PDF document text
    • http://carrasvilla.es/uploads/files/rurowobixezo.pdfIn PDF document text
    • http://beijingteye.com/upload/files/74771400173.pdfIn PDF document text
    • http://classicalgardenstatues.com/uplds/file/23345979499.pdfIn PDF document text
    • http://gazomotor.com/allinone/file/fuwowodenuzised.pdfIn PDF document text
    • http://inspeq.eu/public/files/morunup.pdfIn PDF document text
    • http://casms.org/atts/news-files/file/dubirurererofololotife.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021090404483273499.pdfIn PDF document text
    • http://starinviter.com/ckimagefiles/52851216879.pdfIn PDF document text
    • http://print-printonline.com/ckfinder/userfiles/files/59207867573.pdfIn PDF document text
    • http://abwcoliseum.com/uploads/files/musexadetuvanafo.pdfIn PDF document text
    • https://digireg.cn/upload/zizafaganovafo.pdfIn PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/61391682696.pdfIn PDF document text
    • https://crownprolaw.cn/userfiles/Proj_Name/files/tuwepo.pdfIn PDF document text
    • https://technoarc.net/userfiles/file/pubowajetasususume.pdfIn PDF document text
    • https://corpus.bg/files/fck/file/27497462212.pdfIn PDF document text
    • https://jeevadhara.org/work/london/userfiles/file/farodozubowaro.pdfIn PDF document text
    • https://llibreriaha.com/img/events/file/rolav.pdfIn PDF document text
    • http://futuralagoparking.eu/userfiles/files/30592742160.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+make+a+real+magic+wand+at+homePDF 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_off0000b231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB231 10820 bytes
SHA-256: abcf441aefe3915b96c54a61737ccfaea28ade9e1492703ea0c6d3e10e6183f1
font_01_sfnt_off0000cab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB1 16732 bytes
SHA-256: 88c9f329b667ce64a80602ba047c20f9d5049f6e9d8c63f34246edacaa2a0c2e
font_02_sfnt_off0000f4d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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