Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2d757f8cef6ecb…

MALICIOUS

PDF

74.2 KB Created: 2021-03-25 03:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 90e71a73a4dbe620bf10efe3fc8d98b5 SHA-1: 1041332aa2464f4af99d0334a5d5b887ab1673ff SHA-256: ce2d757f8cef6ecbf4c2f86a57f06ec67d7c2dbace2e493818de1c8c082df1bf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://golowaki.ru/strik?utm_term=personality+and+personal+growth+7th+edition+pdf+free PDF link annotation
    • https://cdn.sqhk.co/falugojafat/hjBtERj/nevuruta.pdfIn PDF document text
    • https://cdn.sqhk.co/segexiji/fjdSyyv/drill_down_excel_pivot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_5fd846a7b8ba5.pdfIn PDF document text
    • http://tiktoktop.design/hay_day_cheats_to_get_free_diamondsug1qk.pdfIn PDF document text
    • https://cdn.sqhk.co/febapaji/yibm3gc/ms_word_borders_download.pdfIn PDF document text
    • http://korecos.ru/los_72_nombres_de_dios_yehuda_berg_gratisli48w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413865/normal_600c7d07c6592.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388285/normal_5fefe6bfdc2a4.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/ggIAigL/last_island_of_survival_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470839/normal_60141f7b8ae96.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/lximhe1/94304840460.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hHHI1it/nufapabiwineriler.pdfIn PDF document text
    • https://cdn.sqhk.co/wevujawej/Pjhiajb/kasokevujox.pdfIn PDF document text
    • https://cdn.sqhk.co/boguzivipel/bhggegp/shark_mod_minecraft_1._14_4.pdfIn PDF document text
    • http://dk-inc.xyz/youtube_glacier_bay_toilets_dual_flush_manual6fpe3.pdfIn PDF document text
    • https://cdn.sqhk.co/kukelagalefe/QiiTahi/sociologie_politique_livre.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460449/normal_5fe7891d428b3.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/mijjgdY/49700027487.pdfIn PDF document text
    • http://foluzedezafaval.iblogger.org/dusifuxu.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/42d27581-4a31-4caa-888b-79c1f84b2555/how_do_i_clear_blocked_calls_on_my_panasonic_phone.pdfIn PDF document text
    • http://lolugedupagimu.epizy.com/curriculum_innovation_definition.pdfIn PDF document text
    • http://notufexunu.rf.gd/business_intelligence_guidebook_rick_sherman_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cab1e16-f70a-4bdf-b8cf-0b44ee1ff9bc/pexemubivumipi.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_off0000e024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE024 5580 bytes
SHA-256: bac525512fa82a2545b10fbe148320f7ad19b4130abd8501f9c4ab15dec42993
font_01_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 11364 bytes
SHA-256: d54f384143f577a984ad2741dccfdb24648a0cee39bc646bd772aa3ed17a64f4

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