Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c8d0f450a4a637…

MALICIOUS

PDF

85.9 KB Created: 2021-03-08 11:01:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7063d48dab2a086447be042dcdf2bc2c SHA-1: 7b3088d9de8ca9b91924711994e68bfe0aa62699 SHA-256: 76c8d0f450a4a6371263175732d4c5c38c21e28e16568cf7d4a8b34863d83f04
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/wix?keyword=glencoe+algebra+1+workbook+answer+key+chapter+8 In PDF document text
    • http://like-store.site/how_is_the_economy_in_jamaica9xc70.pdfIn PDF document text
    • http://theboldpantsproject.com/valibinasotaq235x.pdfIn PDF document text
    • http://lady-bug.club/consecuencias_de_las_esterilizaciones_forzadass04vr.pdfIn PDF document text
    • http://kengoru.space/myasthenia_gravis_adalahpkfie.pdfIn PDF document text
    • http://naturaleone.space/24528209493yltdb.pdfIn PDF document text
    • http://lowixop.22web.org/pabiven.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bogeguva/zaduzijemolufonanen.pdfIn PDF document text
    • http://tekamigela.epizy.com/38102755735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0b3e532-5ade-4bd7-a20f-1a549db489f0/xorapokujof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0435819b-6b2c-482e-aa78-d5a48b342aa3/meraxokuwekitiwepajenas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/443a5551-05bb-476c-8c48-c7a0a3b3eeaf/97860654770.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/cisco_jabber_for_mac_user_guide.pdfIn PDF document text
    • http://givonomiruf.rf.gd/miludezakasemenizelisezo.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/katalog_kabel_kmi.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/greatest_weakness_answers_job_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/25248568893.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/share_chat_ringtones_telugu_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/rowdy_baby_song_sinhala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22b4551f-9fcc-4fed-9e84-08d5bc8a5ed0/16772348044.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/calendario_junio_2019_peru.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/repipige.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/mamadababamuxotopesigiko.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/mediheal_sheet_mask_korea.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/surah_al_mulk_rumi_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7f4e93-9c97-4cd7-a6e2-85e619a25e2a/how_to_make_meeting_report_sample.pdfIn PDF document text
    • http://bosewavim.rf.gd/jitasawenofiwew.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/bernard_shaw_man_and_superman.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/51114938506.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
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10628 5872 bytes
SHA-256: c9c0ec2f99706d1a8a768c1a1a102556b99f4652732a94f3f8e891a7e3ff20dd
font_01_sfnt_off00011a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A02 2684 bytes
SHA-256: 5b0cce7f2f2919facef050ecd749c22a8f4762cf551b8a9c6eff03901b89162d
font_02_sfnt_off0001245b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1245B 10692 bytes
SHA-256: e66e2de298e90f11a3b4fef81fdd0a6b965407e2c4886d8305c90091cc0258a5