Malicious PDF — malware analysis report

Static analysis result for SHA-256 194ba078c7290584…

MALICIOUS

PDF

68.2 KB Created: 2021-03-07 11:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 83df764834465fc4f0694ffb2e9b2daa SHA-1: afd7603e9d85a21f238070a541789331bdb0ac5c SHA-256: 194ba078c729058409542480fae113d48f9d9f9841eda4c837e6c86516225170
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/award?keyword=samsung+refrigerator+rf26hfendsr%252Faa+parts PDF link annotation
    • https://cdn.sqhk.co/reriwoduriju/VjcELWS/man_down_series_2_episode_1_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/selijisede/ZgiBzLf/mods_mexico_euro_truck_simulator_2.pdfIn PDF document text
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/9781668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469365/normal_5fdad970ad1b7.pdfIn PDF document text
    • https://wofiwajelakezod.weebly.com/uploads/1/3/6/0/136092853/xuxokoru-jofuzegis.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/idhgKpP/dexegepuxuzibogufiwasox.pdfIn PDF document text
    • http://bofinaposo.iblogger.org/aplikasi_pembuat_cv_di_android.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/iegjrie/vekodiwisevenep.pdfIn PDF document text
    • https://voranafirodibug.weebly.com/uploads/1/3/2/6/132696030/bukesidun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_602187c81ccdf.pdfIn PDF document text
    • https://cdn.sqhk.co/dowepigakaw/OjiA0hi/sniper_elite_4_switch.pdfIn PDF document text
    • http://dewiwusuxutez.iblogger.org/galvanized_sheet_metal_screws.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/3zVfjcd/move_to_ios_apk_mirror.pdfIn PDF document text
    • https://xalitive.weebly.com/uploads/1/3/4/3/134320973/relatosobeb_movarabatepamoj_varujovedo_jilerugufa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pizibajavodup.epizy.com/hsc_result_marksheet_2019_jessore_board.pdfIn PDF document text
    • https://728bf1be-24e3-4891-ba98-fedceca1a503.filesusr.com/ugd/3268c8_65f888c02a604fc789668e65135ae078.pdf?index=trueIn PDF document text
    • https://28481333-1ef2-46fb-8ebf-d56c3f24acbc.filesusr.com/ugd/314c35_3d2468f914e344279161493adef987b6.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_off0000cf37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF37 5848 bytes
SHA-256: bbc1aff11516600164dd59afc281f427214d1d3f57805e0170d5a3ff31befc2f
font_01_sfnt_off0000e2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FF 9580 bytes
SHA-256: 8fba9592a748f0f5fb974e100be1fb2b2dff90310d947eca365ddeb5feb2c3ba

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