Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d1697d326607fc…

MALICIOUS

PDF

85.3 KB Created: 2021-03-09 01:17:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6ae3a8af7a19a20e5081e05e7c1597ce SHA-1: 85591a2794f30e9df70a012feed9726e8baafc80 SHA-256: 14d1697d326607fc2f1b12bb50ec5e79b2cf2d9d3797c58396b6c70c0296b0ac
194 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ML classifier and ClamAV detection. It contains a link farm with numerous external links, some pointing to potentially disposable domains, suggesting a phishing or malware distribution attempt. The presence of a 'download button' lure further supports this. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/award?keyword=ncert+biology+class+11+short+notes+pdf PDF link annotation
    • http://nout-sale.site/raxixazaweraq5pu.pdfIn PDF document text
    • https://likifovufuli.weebly.com/uploads/1/3/4/5/134588617/aa1bdd95b.pdfIn PDF document text
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/zagonuzoxagojaw.pdfIn PDF document text
    • https://tudogevu.weebly.com/uploads/1/3/2/7/132741144/pikuxir.pdfIn PDF document text
    • http://figejewumoposes.getenjoyment.net/how_many_volumes_of_saga_are_out.pdfIn PDF document text
    • https://viliwefat.weebly.com/uploads/1/3/1/0/131069961/noxinejugipaz_xunutelepopob_gipemasanedoxe_xudob.pdfIn PDF document text
    • http://nufivuzelikonax.getenjoyment.net/38980881923.pdfIn PDF document text
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/35bcdbba.pdfIn PDF document text
    • http://francobusiness.com/what_is_lexile_range_for_8th_gradey3qad.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/717b5756-c121-40b3-8c49-e771769ce25a/super_mario_land_2_dx_patched_rom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561a7396-f918-408e-af96-7992eb73a372/madame_butterfly_summary_brainly.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/kawasaki_fs481v_engine_oil_type.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c33941c-f6bb-4870-a34e-2ddfd6da51ff/which_of_the_following_is_true_of_master_budgets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04754d84-e5d6-4810-a98a-d18afbfc7f1c/tanexuwowowaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4629390f-6abf-482f-af88-9ce954fd195d/simple_english_conversation_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c0c4c5-05ca-4522-85d1-967ba9e4dec3/crossfit_level_1_training_guide_hard_copy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c27490f-d0a5-4069-9f93-a463af0500c2/259462334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e81bc1fa-8673-483c-9c26-b87718a81183/xotic_effects_sp_compressor_bass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8db78cd2-1206-4da3-b697-048beadf9b14/54550222442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c091222-a836-4672-802c-ae313b4b2214/vijironaxofemazalakugomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f5e17a1-d957-48b3-8d68-2c5c8a1907a9/60959258190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0593816-809e-4eeb-b9a3-51d42507791e/percy_jackson_and_the_olympians_tv_show_cast.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_off0000fa5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5D 5680 bytes
SHA-256: 76c3ead77ec0b0edcd54082cb5c5dd27656faa724bc9d2848a1221b4dcbf5369
font_01_sfnt_off00010dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBC 10472 bytes
SHA-256: de809e17e905d58fbe8399006f12c55d72b5d4f15ed5f458a7076abcf24c5120
font_02_sfnt_off0001318b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1318B 16164 bytes
SHA-256: 4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349