Malicious PDF — malware analysis report

Static analysis result for SHA-256 85610ec5b30b5201…

MALICIOUS

PDF

76.9 KB Created: 2021-03-10 08:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a6ba220c99bc74e64dccad8cf46a558c SHA-1: e4ba064f128a856bdb9b11f57fabba5a17232b19 SHA-256: 85610ec5b30b5201b291886d5243facc7a5b53a19114529de9a721557e9645a8
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=unblocked+games+32 PDF link annotation
    • http://craftsmansmetics.com/plato_algebra_2_pretest_answers6ac40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465007/normal_5fc9c2b2e7e1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445735/normal_5fceb3a0c3bbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462339/normal_60288a3b3cfd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446170/normal_602ef8ef0121d.pdfIn PDF document text
    • http://marketeuro.pro/smoothie_recipes_with_spinach2gjuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_601217623d368.pdfIn PDF document text
    • http://trudogoliya.online/53049131422lqo9k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383801/normal_6005a447d4801.pdfIn PDF document text
    • http://vipmanmarket.space/53253917306bnstm.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://uploads.strikinglycdn.com/files/db4cc962-aa1d-4a11-b12f-1f49ed0dbad3/5679769709.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/virarasewumomudo.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/what_is_daniel_fast_food_list.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/free_psd_templates_flyer_club.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/6204430768.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/vivezejijafajutexosilage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0eaa95c-5780-44c6-a312-fcccbb4b2eaa/heraclitus_fragments_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/19394119952.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/619638409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcfc486-b1b7-4cb6-91ea-de609bde2aa5/how_to_create_budget_in_quicken_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce1ae35-031d-4c1f-9482-27797210c526/plan_de_estudios_2011_secundaria_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/waxuxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE404 5312 bytes
SHA-256: 699866de5dd20fbe627654180822812966d0cde13bf17603564ff3a6a320e217
font_01_sfnt_off0000f5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F1 10044 bytes
SHA-256: 861de948ed31c9efb8675ba0a1746bd48422abeea6c23cd052006cf3dbbddb14
font_02_sfnt_off0001184d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1184D 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e