Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e334d9c3a4e65d…

MALICIOUS

PDF

78.3 KB Created: 2021-03-21 05:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 698e1bb7cedf29c9102fed7f9dd4d264 SHA-1: 51becf7fb6e4d02d9dd8601af5294d42f70c54a0 SHA-256: d2e334d9c3a4e65d6d4add7f64ee6c6b1a9f5c45ad34926a7b8a11ac6d080f44
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it might be a generated document used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/wix?keyword=isolate+variable+calculator
    • http://jesawukimefix.mypressonline.com/fodejalurikoz.pdf
    • http://kirakexig.mypressonline.com/what_is_schrodinger_wave_equation_derivation.pdf
    • http://wimawukit.iblogger.org/sesejabivabafizizup.pdf
    • http://piwulag.sportsontheweb.net/itc_hs_code_list_2020.pdf
    • http://dusosax.66ghz.com/97763089796.pdf
    • http://goldenframecollision.com/phil_collins_in_the_air_tonight_mp3_free_download_320kbpsf6xfe.pdf
    • https://cdn-cms.f-static.net/uploads/4387218/normal_60124edc81a04.pdf
    • http://niwadeg.mywebcommunity.org/zukevosuxoz.pdf
    • https://cdn-cms.f-static.net/uploads/4448110/normal_6030eaacc6ff7.pdf
    • https://cdn.sqhk.co/wujakegu/ghZ92hj/griswold_inn_rooms.pdf
    • https://cdn.sqhk.co/vuvapolaxaj/FhdhipV/famous_film_quotes_quiz_2020.pdf
    • https://cdn.sqhk.co/taxosavasesa/hjjHU0r/retro_drag_racing_apk.pdf
    • https://cdn.sqhk.co/dufubimaru/ighhdAP/2019.pdf
    • http://copyrightreports.com/201666327076ubib.pdf
    • https://cdn.sqhk.co/lexoxuxoluvi/qgicCij/turitekuvot.pdf
    • https://static.s123-cdn-static.com/uploads/4377403/normal_5fc5db0931839.pdf
    • http://gamowenugeg.sportsontheweb.net/7684579135.pdf
    • http://potobol.22web.org/canvas_js_library.pdf
    • https://cdn-cms.f-static.net/uploads/4464877/normal_60566a32c8854.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vujuvisesakok.myartsonline.com/zapudowopigumegiwiv.pdf
    • http://nibemodida.myartsonline.com/2014_john_deere_gator_825i_owners_manual.pdf
    • http://xuvuzonixo.onlinewebshop.net/myron_mixon_brine_recipe.pdf
    • http://rosajeku.myartsonline.com/hamilton_beach_oven_manual.pdf
    • http://jusaxokipumata.rf.gd/41705510634.pdf
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f025.bin
a94bef21ec0883ffb5ee8789f6a3fbdc7fca358f8fbd43e582cbb75893598887		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF025 4928 bytes
font_01_sfnt_off000100fd.bin
7a2f6b14c84a8d67e9f8bc65715854fac2511c9a6417ec42ac9822581417bb27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100FD 13308 bytes

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