Malicious PDF — malware analysis report

Static analysis result for SHA-256 c027151f060202dc…

MALICIOUS

PDF

124.0 KB Created: 2021-03-09 06:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e0682e1e4d3d23564246f289f25d4751 SHA-1: 615c578ef431ab4ddbc74ef53d21bb8752a9927a SHA-256: c027151f060202dce5b82712552aec5a7cd47fc5a178ab197182e7cf52c1d240
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, as malicious. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to technical diagrams, likely intended to trick users into visiting the malicious sites.

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://maypoin.ru/wix?keyword=microwave+transformer+wiring+diagram PDF link annotation
    • http://domainlimax.xyz/xikolupeveviwavirurik18xd1.pdfIn PDF document text
    • http://fruittea.space/acido_perclorico_estructura_de_lewis2b078.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411917/normal_5fed5810cff88.pdfIn PDF document text
    • https://narosixepitifon.weebly.com/uploads/1/3/5/9/135960882/jitil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404987/normal_5fe2c73835da6.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/73597838092cjvd8.pdfIn PDF document text
    • http://bcpzonasegur4viabcp.com/kikufizujupufzvyh.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/mobarupubete0gyaf.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/wufadegakagilo-vukemixefoda.pdfIn PDF document text
    • http://iminn.ru/pixel_launcher_apk_miui_1088g8i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_6042dd88bb398.pdfIn PDF document text
    • https://zibozofos.weebly.com/uploads/1/3/4/8/134896422/lusuzepukir_lozujexunipu_piwekuloxisomid.pdfIn PDF document text
    • https://jurisosisirebak.weebly.com/uploads/1/3/6/0/136086550/b0064.pdfIn PDF document text
    • http://taptopbot.com/57787087538cd562.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/japuzofulozaba-jupigap-dadakapok.pdfIn PDF document text
    • https://felabare.weebly.com/uploads/1/3/0/7/130776415/5256184.pdfIn PDF document text
    • https://vetexugosopaviz.weebly.com/uploads/1/3/0/7/130738505/2511330.pdfIn PDF document text
    • http://wejnpowk.space/relion_micro_test_strips_discontinuedp7f32.pdfIn PDF document text
    • http://speak4pro.com/tencel_sheets_west_elmh0r34.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/givetobarok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e754f466-e32e-49fa-97f2-0eb1979f2088/database_management_software_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97daddd9-cfc5-471d-a58f-fb97592c669f/homemade_log_splitter_4_way_wedge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac5ab800-78a8-4768-b342-b31ee559cb5c/fiasco_rpg_trove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3ff7fe2-d5ae-4848-8aff-3526408bc4c4/10053184465.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9B5 5468 bytes
SHA-256: d4bab27df5838c1a8800b31b8a26a73450beec907df5edff2aa59efeea4710d7
font_01_sfnt_off0001bc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC5F 11100 bytes
SHA-256: 5eacdf35b117022cab5c9b7ce8784b6ee2a171198fb4839dd1c684da135d40cf

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