Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e02b49e111575db…

MALICIOUS

PDF

75.3 KB Created: 2021-04-07 02:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f20932bc0b3e7c9a4b3d6f3a2188155a SHA-1: 4ea3dc1a9629efaf9ae62db0fa772d8d0fcfd412 SHA-256: 7e02b49e111575db3875ba3d8474b7ddbf5c2a2a4f1fff886a9c2068ec1496ce
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary external URI pointing to 'https://bologen.ru/strik?utm_term=what+does+222+means+in+dream', suggesting a lure to a malicious site. The document body, though heavily obfuscated, contains text related to dream interpretation, likely serving as a pretext to drive traffic to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/strik?utm_term=what+does+222+means+in+dream PDF link annotation
    • http://xenojupu.mywebcommunity.org/95321195458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_6044ce4a74436.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/jbBjhha/livongo_meter_accuracy.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/xejaxabuwoxuvikiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373505/normal_5ff6ad2c5276e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448094/normal_5fd30168ddaf7.pdfIn PDF document text
    • http://kawasus.scienceontheweb.net/cessna_208_maintenance_manual.pdfIn PDF document text
    • http://gamuxiwami.getenjoyment.net/how_to_apply_sticky_wall_vinyl.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/VjaVQge/fufite.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/ni3hihi/60993136075.pdfIn PDF document text
    • http://duvejajenivogik.getenjoyment.net/cancer_de_colon_sintomas_y_signos_iniciales.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/jTyifjh/monster_truck_freestyle_games_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fefuxumito/1kihhgi/1349952565.pdfIn PDF document text
    • https://cdn.sqhk.co/vonofuguniti/0kaL53r/13791847792.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/iijgjjJ/barber_hair_salon_hair_styling_games_3d_online.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/55ced9d7-50bc-493d-a5e1-e509d576daab/pivefinewitiwosene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65900318-7275-45b1-9211-a72e4db15d34/how_to_change_fitbit_watch_band.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d14244d-e1df-4a2c-9f65-3b5c055f9139/87952100150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db7966b-98a6-4514-afc1-cb0174d9a342/words_that_start_with_overa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7eeb81-d579-4f91-bb91-5a0e3db27496/antonyms_worksheet_for_grade_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad4aef9-5e9d-462d-a980-1fa52f23be92/muluda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74999cc4-b1c0-4498-ac10-507079bbf81a/kjv_1611_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/094e59fc-5446-4595-a1fe-adbe861345e4/41067959272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91e31f0-e3f7-423a-97e4-05c1bd0212e3/the_wonder_weeks_leap_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2ba9e1-9054-493d-9c5c-631200eeba3c/sharp_lc-60le650u_troubleshooting.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C3 5176 bytes
SHA-256: 6a5b08344063d6508c6c57c0af7bcc669ec419c34db36a3f9fd81beca9db261e
font_01_sfnt_off0000fa41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA41 11084 bytes
SHA-256: b35dd9d9d9003829d9bb5a3e715882c44c76d9866c4830bf8a00316384316b5b