Malicious PDF — malware analysis report

Static analysis result for SHA-256 3264707aec4d4131…

MALICIOUS

PDF

127.9 KB Created: 2021-05-21 13:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f6894243d781ab48ed6e22baa63a15b4 SHA-1: 12daf1addeae3b00908b37251faef52c2e4d7571 SHA-256: 3264707aec4d4131d456355928f89b15d967efae7cc58136f8ff014f465fde6f
156 Risk Score

Malware Insights

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

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 0.9978

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 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.
  • 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=chandni+chowk+to+china+full+movie+online+in+hindi PDF link annotation
    • https://xovigojimere.weebly.com/uploads/1/3/4/8/134854331/5863763.pdfIn PDF document text
    • https://pulijapejupexeb.weebly.com/uploads/1/3/4/0/134041872/58c5f99f.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/bokavegam.pdfIn PDF document text
    • https://beluxavin.weebly.com/uploads/1/3/4/5/134507718/sanutawuj-xitutel-lasajukasag.pdfIn PDF document text
    • https://wuxelulomevadi.weebly.com/uploads/1/3/4/9/134904547/pobav-vojagatopase-xusofipuzonisi.pdfIn PDF document text
    • https://figuzejigof.weebly.com/uploads/1/3/4/6/134644002/2463656.pdfIn PDF document text
    • https://pomaxobizo.weebly.com/uploads/1/3/1/1/131163853/gaguma_kakepefogom.pdfIn PDF document text
    • https://gazasajud.weebly.com/uploads/1/3/4/8/134879445/33c6108c70.pdfIn PDF document text
    • https://rowemuvirota.weebly.com/uploads/1/3/6/0/136089617/waloxabovara_wagule.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://s3.amazonaws.com/vojapu/billu_comedy_video_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/central_loan_administration_and_reporting_contact_number.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/stock_markets_around_the_world_news.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/catalogo_boticario_ciclo_8.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/incroperas_principles_of_heat_and_mass_transfer_1st_edition_global_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/hayward_h400_pool_heater_propane.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/autobusov_ndra_praha_florenc_informace.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/biodegradable_plastic_from_corn_starch.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/72573776731.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/75709436525.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/25244559031.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/what_is_root_cause_analysis_in_project_management.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/husqvarna_sewing_machine_dealers_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/aila_re_aila_dj_remix.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B65 3776 bytes
SHA-256: d7bea84525bbefdb5850337f7daf5ff5554917552b257dd0afd4411b02ea0fc5
font_01_sfnt_off000178f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178F4 5108 bytes
SHA-256: 675b34bb180455920319da98f1ebc7aa0c5fc84a999124d5076e872966674349
font_02_sfnt_off00018a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A46 17892 bytes
SHA-256: 71838ca0d5f275f495f825821f486ec38c89a4e8d45b0babdbe7713c54458d95
font_03_sfnt_off0001bfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFB8 20300 bytes
SHA-256: 2686533020c4521a0b16d80c0bd57a865f7209aaca1db245051d1ced442cb9c1
font_04_sfnt_off0001e2c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E2C2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378