Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c2e96fdc7db24f…

MALICIOUS

PDF

83.1 KB Created: 2021-03-15 17:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bada6b8d5f2105ef6162cf4fec7a1963 SHA-1: d4781bce0b5720c62dc0b0b71c7d166ad6642976 SHA-256: 16c2e96fdc7db24ff98b88c2107b7b93a6a8fe04c93c55de3b5ffb26eb587e71
126 Risk Score

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 0.9998

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://leonvi.ru/strik?utm_term=cs+lewis+and+tolkien+book PDF link annotation
    • http://nexofozupugasi.mywebcommunity.org/bollinger_bands_squeeze.pdfIn PDF document text
    • http://instahelpforbusiness.com/short_blog_template_aminoqigfw.pdfIn PDF document text
    • http://good-production17.site/fifty_shades_of_grey_freed_soundtrack_download_android7l8qp.pdfIn PDF document text
    • http://hightrade.club/la_republica_de_platon_editorial_gredos2lmwx.pdfIn PDF document text
    • http://astropsychology.site/jotisesavkdbrg.pdfIn PDF document text
    • http://volosaty100.xyz/bunga_citra_lestari_lagu6tkym.pdfIn PDF document text
    • http://trening-ekaterinodar.ru/list_of_synonyms_and_antonyms_for_ssc_exam22oop.pdfIn PDF document text
    • http://podarokinsta365.site/truth_and_methodghg9n.pdfIn PDF document text
    • http://dlkmvkoenv.info/mexikuvozituox55s.pdfIn PDF document text
    • http://bazunujovi.scienceontheweb.net/66612889912.pdfIn PDF document text
    • http://rijoginijamibeg.mypressonline.com/25413637539.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://95a83a18-022f-4aa5-9dc2-588eac4c5c4a.filesusr.com/ugd/ccb6ab_7980fdb8ba074977a99e6a819816cfe9.pdf?index=trueIn PDF document text
    • https://ded05c8b-f0d8-42bc-a64b-daa0b63394ca.filesusr.com/ugd/99afdc_d5a1c5fee45b491d809e22e70054f892.pdf?index=trueIn PDF document text
    • http://kogotiru.myartsonline.com/marcy_weight_bench_walmart_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/4003665257.pdfIn PDF document text
    • https://2a4b29e6-a790-453e-81e7-e8b9caf2c27b.filesusr.com/ugd/bf0735_69871f44387f48599944509fc34e6d06.pdf?index=trueIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_bd3d78890dbc4f298899ddda72990f62.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/most_easy_songs_to_play_on_guitar.pdfIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_551d96f001954e0a9e5dc9c6e66197d8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f86f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86F 4828 bytes
SHA-256: acae74f9f25145943c96a090c427386f74871b0517633eecd3c5af00c91eec25
font_01_sfnt_off000108fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108FB 11388 bytes
SHA-256: ef2bb50c678590c4a7831e32f5884c3ebf42985ab9e497f8d98701381ad65465
font_02_sfnt_off00012fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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