Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb6d27937327f1f…

MALICIOUS

PDF

67.4 KB Created: 2021-03-25 08:00:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426639eb215459571336036dbd97fbd3 SHA-1: 24077cf66799d7685f8cd3a6b3b3aecf9476b857 SHA-256: aeb6d27937327f1f5824628960c0b0fb6671a94ba5ed7fd8c20b5ecb4810c5d1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'druttle.ru' suggests the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URI indicate a phishing or malware distribution attempt, likely leveraging a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=big+jet+plane+lyrics+angus+and+julia+stone
    • http://samo-katim.ru/telofusubogexalz2mwd.pdf
    • http://cleaner360.shop/avast_vpn_crack_apkrpnyp.pdf
    • http://7lessons.site/space_jump_timing_super_metroide5sr9.pdf
    • https://cdn.sqhk.co/wadupaxi/jgjbBgh/63594657658.pdf
    • http://nature-ital.space/gosam3s078.pdf
    • http://bettermoneytips.com/verizon_fios_router_connection_diagramaigzp.pdf
    • https://cdn.sqhk.co/dugubupa/jehhTjh/dorot_frozen_crushed_ginger_2._5oz.pdf
    • http://kesisofawa.mygamesonline.org/compaia_botanica_libro.pdf
    • https://cdn.sqhk.co/purorenutuw/gghMlld/bivavuzaxemezewes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://befakas.epizy.com/latupujesumenesazarolenat.pdf
    • https://s3.amazonaws.com/fajetufekejo/minnesota_court_forms_harassment_restraining_order.pdf
    • http://kozogasivufi.myartsonline.com/la_tregua_mario_benedetti_analisis_literario.pdf
    • https://s3.amazonaws.com/fifuto/67434592555.pdf
    • http://godutiliwaganos.rf.gd/dbt_therapy_skills_worksheets.pdf
    • https://s3.amazonaws.com/resisuna/sexowavajawosojugalo.pdf
    • https://s3.amazonaws.com/muvazi/vidmate_apk_9apps.pdf
    • http://novogizeboje.myartsonline.com/fikod.pdf
    • 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_off0000c968.bin
b039c743a65ef1a89fcb44a315b52e9e9ef612571a3d1c23e1840c89b97ed836
pdf-font-stream PDF embedded font (sfnt) at offset 0xC968 5468 bytes
font_01_sfnt_off0000dc22.bin
5eb24a9c14bb0d8e6581ee7046b78812d468a1f88630e08b50d80a1411c84c32
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 10824 bytes