Malicious PDF — malware analysis report

Static analysis result for SHA-256 03bc80ebd133d216…

MALICIOUS

PDF

68.8 KB Created: 2021-04-29 21:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e64ce5c3d0b7b69bcacf8c95f302658d SHA-1: 298ff3bfd29529c891297b29c3b8bfc958195ba4 SHA-256: 03bc80ebd133d2163daa9d51d3d7ffd7af1fb2eeb95bd6217a533bb5dcb9776a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used to redirect users to a phishing or malware hosting site. The document body is heavily obfuscated, but the presence of the external URI and the overall detection indicate a malicious intent, likely related to phishing or malware delivery.

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://leonvi.ru/strik?utm_term=fender+princeton+chorus+125w+review
    • http://metarapuw.mypressonline.com/91630270552.pdf
    • https://cdn.sqhk.co/jojojidatun/ggeBheO/blood_house_escape_walkthrough_level_2.pdf
    • http://nenodipemuxok.mypressonline.com/walepebawavemiki.pdf
    • http://gosugas.getenjoyment.net/pijezafojodo.pdf
    • https://cdn.sqhk.co/jiwonukunav/jbjav2D/7121333314.pdf
    • http://xegisepereti.mygamesonline.org/chemistry_of_enzyme_catalysis.pdf
    • https://cdn.sqhk.co/faruzikako/g0YEj9i/vaxaberu.pdf
    • https://cdn.sqhk.co/sinemajud/iZsdggP/slice_pizza_delivery_near_you.pdf
    • http://wokodanib.getenjoyment.net/fibagewoke.pdf
    • http://wopizup.mypressonline.com/fjalor_ekonomik_anglisht_shqip.pdf
    • https://cdn.sqhk.co/lubometusoz/GhbggSg/32199177403.pdf
    • http://ketoxitigojaluk.sportsontheweb.net/3338883289.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6ad3963a-77c4-4799-a6f5-924480f821bf/3908698247.pdf
    • https://uploads.strikinglycdn.com/files/d2b8e861-0c92-402e-acfd-f32902e76914/jump_force_character_pass_2_price.pdf
    • https://uploads.strikinglycdn.com/files/10d1c248-8a45-4049-b4c2-b808948ed32f/information_technology_jobs_arlington_tx.pdf
    • http://bamonoxo.onlinewebshop.net/hipoglucemiantes_orales_e_insulina.pdf
    • https://uploads.strikinglycdn.com/files/de322c40-f94c-469f-836a-2cc231a73d35/wuzamavudigawabuxex.pdf
    • https://uploads.strikinglycdn.com/files/787d240f-e5a6-4862-8b86-dfb0a864f390/vumabobisimedilej.pdf
    • https://uploads.strikinglycdn.com/files/2f6b0c59-c357-46e0-920c-985e46bf2e58/dijazogugidunusevog.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_off0000cde1.bin
69c11d790fe1641d35c39413d317521a1b444240e231d829aa77cd46fb0af4d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE1 5332 bytes
font_01_sfnt_off0000e027.bin
eed70a3aba2fd16a6c7649d02d04cf8519bf2d37a360cfb34a63eb4d4b6b1e2b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 11748 bytes