Malicious PDF — malware analysis report

Static analysis result for SHA-256 02929a62ed27e8fe…

MALICIOUS

PDF

84.5 KB Created: 2021-04-03 18:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a205e93f6930d31390fa40794dc2239b SHA-1: 5b0145be6dbdc47235489031b41d3ecbe413d43f SHA-256: 02929a62ed27e8fe05cb5062d45cc7a017df7f86af171008b32e44f834c96c7a
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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

  • 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://crophysi.ru/strik?utm_term=price+of+echo+dot+in+india PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486965/normal_5fccd12f25f54.pdfIn PDF document text
    • https://cdn.sqhk.co/sokodajep/bbghcnv/menoka.pdfIn PDF document text
    • https://fogisavelubid.weebly.com/uploads/1/3/5/2/135299906/2333024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417995/normal_600024b72de78.pdfIn PDF document text
    • https://suxasamivozafe.weebly.com/uploads/1/3/4/7/134705269/golalesemo_lutozu.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/4a2Khh8/fesulozamejedizedinalulal.pdfIn PDF document text
    • https://cdn.sqhk.co/sogunixe/iUIii1o/pelugig.pdfIn PDF document text
    • https://godewofevi.weebly.com/uploads/1/3/2/8/132814364/gipuvomitimijabizu.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/dLFi4A5/22846395753.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/061f7ef5aca69f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_6049cbe88420c.pdfIn PDF document text
    • http://xagakojitogiva.getenjoyment.net/arabic_to_english_translate.pdfIn PDF document text
    • https://cdn.sqhk.co/lexikegije/jbGiaWm/gibomufadex.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/g09zjjq/pixbit_pixel_icon_pack_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383925/normal_5ffb76c1983a4.pdfIn PDF document text
    • https://cdn.sqhk.co/vonofuguniti/IghMge6/snow_bros_2_4_players.pdfIn PDF document text
    • http://tifusavegapawuf.mygamesonline.org/what_does_the_clean_light_mean_on_my_mr_coffee.pdfIn PDF document text
    • https://cdn.sqhk.co/felinavaw/Iigecgf/dutejabokojes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471683/normal_6052e0eb648a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/waltz_for_debby_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/auto_chess_dota_guide.pdfIn PDF document text
    • http://jifimurosesapu.atwebpages.com/fobazuniramo.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/android_tv_o_samsung_smart_tv.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59E 4900 bytes
SHA-256: 327f065a82e372fc15e1116a296a4fa30d7571348a905a8bcc3560e086a9a27d
font_01_sfnt_off00010641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10641 11040 bytes
SHA-256: efdc01904e14cbb8a3052911326a176a26639c39fcc4c1aca13f816d57b47b5f
font_02_sfnt_off00012c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C0A 16604 bytes
SHA-256: 43e1c5681006320bb7a89ecab60ead451a89aba371e4e0a0538160bcf0909fe8