Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9e5cf45344310a…

MALICIOUS

PDF

79.7 KB Created: 2021-03-15 09:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a20b35365897466be15af2564ad27fd SHA-1: 2a7ccb99dbd12fc93cf4c31935c9f6aea228c05a SHA-256: 5f9e5cf45344310a9dcfe78414236aa56120d7672b24509195db4b64eaef0a00
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL `https://bologen.ru/wix?keyword=fat+horse+cookie+meme` suggests a lure to a malicious site, likely for downloading a secondary payload. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=fat+horse+cookie+meme
    • http://wrinklestiltskin.com/zujajelamhcnr.pdf
    • http://newyearshop.site/defulagupidetapipunemivumc2zi2.pdf
    • http://bhd-management.space/771308743371twd5.pdf
    • https://cdn.sqhk.co/vinogusi/idof5pL/32392298863.pdf
    • http://leftoutclub.com/cahier_de_vacances_ce2_cm1u4j74.pdf
    • http://sunshop.pro/ardas_kara_punjabi_song_videos2vz5.pdf
    • http://beamorem.com/ali_g_indahouse_yify75eww.pdf
    • http://life50it.pro/how_to_cook_meat_in_a_power_pressure_cooker_xlrszic.pdf
    • https://cdn.sqhk.co/lenawemijixe/Khhjhaw/77884667474.pdf
    • http://portkamesto.site/83116157631pjzqs.pdf
    • http://jejunobu.iblogger.org/trap_drum_pattern_fl_studio.pdf
    • http://opensol.xyz/how_to_use_the_dirt_devil_carpet_cleanerh08fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vawagetes.rf.gd/nobobot.pdf
    • http://nakanunelu.rf.gd/ragadax.pdf
    • https://e1318bff-d970-45e2-bcea-45481503a18b.filesusr.com/ugd/75a96d_b0edaf2ffea14035b0fea98bb950ed71.pdf?index=true
    • https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_17fafec594eb48dbbfb945bd109b14b6.pdf?index=true
    • http://bupukulepunaz.rf.gd/12184881226.pdf
    • https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_6d46c4741d5a4d27ae7ed34118c23588.pdf?index=true
    • http://xebudulo.rf.gd/adeste_fideles_chor_noten.pdf
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_0ac156d630ba4a40be3420de25db32cc.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb23.bin
9da1de7c2549e6ea9309977ea043a2a59e519fffd59e89d02aad02c9fc8a880d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB23 5024 bytes
font_01_sfnt_off00010c11.bin
7a54f7f1c11febcf6c3739d88d76fd4ee39564e0ad5030f5c93966fb91dfd905
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C11 11000 bytes