Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8e7d361eb4b9f2…

MALICIOUS

PDF

75.8 KB Created: 2021-02-20 15:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 48c2303428d2dfc96dda8f2ae6c0b798 SHA-1: 3c7f2937ddbe6e3c4947cb0dd320594c23f04846 SHA-256: fc8e7d361eb4b9f2c627c5fa75aa36994360062561cab0fa7c8f2765d17b3e95
136 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, with high-confidence heuristics indicating suspicious links and lures within the PDF. The embedded URLs, such as http://loginwithfb.site/mens_haircuts_long_hairhklab.pdf, suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to trick users into navigating to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jottigo.ru/aws?utm_term=3d+animation+for+beginners+pdf PDF link annotation
    • https://cdn.sqhk.co/zudilubal/pShc4ia/vawipujadonalirudat.pdfIn PDF document text
    • http://elerctum.org/crayfish_dissection_pre_lab_answer_keymru3m.pdfIn PDF document text
    • http://my-favshop.online/fapowibamadutilom8ko0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448103/normal_602e7d1471981.pdfIn PDF document text
    • http://ttttrrrr.space/dias_de_pinta_librot4fbn.pdfIn PDF document text
    • http://davokoxu.22web.org/17795048982.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377647/normal_5fdb02a97c736.pdfIn PDF document text
    • http://amsidisi.xyz/cataclysm_dark_days_ahead_mycus_mutationcq1lr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469355/normal_600cf1d518219.pdfIn PDF document text
    • http://loginwithfb.site/mens_haircuts_long_hairhklab.pdfIn PDF document text
    • http://50offstore.pro/20608461479yv1f7.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/jgghd4z/bumobugezemabunimedonapiw.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/jcQsgdg/merge_tower_bots_pc.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://s3.amazonaws.com/dazifozixawus/intel_bluetooth_driver_for_windows_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/tofozed.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/beeman_sportsman_rs2_series_air_rifle_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/traffic_report_caloundra_to_brisbane.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/game_awards_2020_game_of_the_year_reddit.pdfIn PDF document text
    • http://rumajajoneder.rf.gd/quitar_busqueda_por_voz_android.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_off0000e006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE006 5324 bytes
SHA-256: c17d16c23225e0323ac4d1154b1ab3278604488a98a8a1ab66d13e985cba9124
font_01_sfnt_off0000f1fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1FC 10012 bytes
SHA-256: ff3cf88bf82d7d6287d633883e7a8bd047111ac135eb8121be9933af35ea0919
font_02_sfnt_off0001140a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1140A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.