Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f14778e7b241fb…

MALICIOUS

PDF

82.2 KB Created: 2021-03-16 23:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 09d54fa9caa8e5ff283ee9027bb96d2b SHA-1: 1ecbd95922b022a7c1b9bf01d9e098e57d27b80b SHA-256: d0f14778e7b241fb9744948302b21de84071267be01b4b24809e628a12b0696e
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to 'mezovuduw.ru', suggesting a redirection to a malicious site. The document body, though heavily obfuscated, appears to contain keywords related to books and application metadata, likely serving as a lure. The presence of embedded JavaScript further supports malicious intent, potentially for exploiting vulnerabilities or downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=traditional+literature+books PDF link annotation
    • http://mobufuwiwid.medianewsonline.com/gugarabi.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/why_is_my_desktop_not_showing_icons.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/what_are_the_three_different_theories_of_language_development.pdfIn PDF document text
    • http://zemesod.getenjoyment.net/85424550014.pdfIn PDF document text
    • http://nigodofifulo.scienceontheweb.net/gematelisusuwimixusowuf.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/vitamix_e320_vs_5200_reddit.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/what_is_macroeconomics_explain_its_importance_and_limitations.pdfIn PDF document text
    • http://gadivawiw.sportsontheweb.net/writing_a_business_plan_example.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/veg_recipe_of_india_chilli_paneer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_9ebb02bd4b81483ea65719301dcdd895.pdf?index=trueIn PDF document text
    • https://c63359c4-faa5-40af-ad11-254ddd3d100c.filesusr.com/ugd/838c33_982d8d423ec64576a94f4a34af540c92.pdf?index=trueIn PDF document text
    • https://ac4cd5cf-e861-4b1b-a585-e47049f737a6.filesusr.com/ugd/843280_aed4156c75274fb9b7b5b5788f285634.pdf?index=trueIn PDF document text
    • https://29474179-7c7c-44ae-84e0-3c37792f2e25.filesusr.com/ugd/7f817d_7916abb379234402b8df1f35c3a1c3af.pdf?index=trueIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_0b99b0cb0d964a34940a8adb95928795.pdf?index=trueIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_98a3f52449f844f7aa2569945e380d1e.pdf?index=trueIn PDF document text
    • https://9f2a6cc1-6e15-4467-beaa-57274ca996ed.filesusr.com/ugd/78f4c3_853a2bd3c4e244168394d1044761edeb.pdf?index=trueIn PDF document text
    • https://45ae50e1-98a8-4501-9ad6-fc0df438eb43.filesusr.com/ugd/b16523_ce6ed8e285c34db494eb1f5b87a25e26.pdf?index=trueIn PDF document text
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_1d8456c8147345ef9e6a9d1e89876dc3.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BF 4972 bytes
SHA-256: e85d9a3ce97f094ace457a8e54efdc72fefa43b3d1e50085fe83bd380e129875
font_01_sfnt_off000115ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AC 11308 bytes
SHA-256: 9d86e51f89bfb2ba6bed68dfdbb4bc3e7f4920333e07dcfbb43971d84a3b1928

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