Malicious PDF — malware analysis report

Static analysis result for SHA-256 7777dbf960f1ac59…

MALICIOUS

PDF

74.1 KB Created: 2021-03-30 20:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 259a0f3472a6c6707878a03ce340b3eb SHA-1: 1134519c0ddbeff1cfdf5ba5e228f9e177c3f59c SHA-256: 7777dbf960f1ac5980778225e3db00586c6d8856c12c1809ef26ceb0cbed3f12
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://dugedepap.ru/award?keyword=bmtcn+certification+review+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/xagegegozi/4hCcibM/78488141865.pdfIn PDF document text
    • http://instapodarok.site/sivaxiwuluf6qjbq.pdfIn PDF document text
    • https://cdn.sqhk.co/lafixafif/bdjjcjj/65389443807.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/ibYhege/58882763680.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/jjvhegd/wumevaxujesuzazajetovovot.pdfIn PDF document text
    • http://goproits.com/difference_between_project_and_program_management_pptie7tk.pdfIn PDF document text
    • https://cdn.sqhk.co/xurokagozagu/g8Wo67U/shanika_madumali_song_free.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/tajimipojimo/balanced_scorecard_case_study.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/jafixamanusevovazan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b102ed-d542-4dc8-806a-565bf86cd6c3/what_is_the_average_salary_for_social_workers_with_masters_degrees.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a5cb0b-cf63-4883-b0ec-6de37cc2a290/31860813700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f85f4f3-744c-4886-a746-0ab2f7d786e9/55695276111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2882ddf-f936-49d8-a499-1c398c4b1dbc/fowemav.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/43796831457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26fefdb6-6dbe-449b-ae70-d297f0fb144f/34405720448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981dd1ed-dd44-4d46-92e9-d9dee95a60b4/jam2_speaker_pairing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8638e332-ff3d-4300-ae4c-f71f6f4695c7/kegiwoban.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/24003253295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2da14e2b-b9f0-4e11-a017-584ebfaa3f56/42962322475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a0962e2-0e02-4f46-b020-007e4724daae/fufedutixetigurig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f143462-6137-411f-8cfe-a97f4c1e646f/how_to_fold_graco_fastaction_stroller.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/crafting_dead_map.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/ioi_downpour_piano_sheet_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/17121812634.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_off0000dfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA5 5324 bytes
SHA-256: 59340c20635d4f4cceca772361a99111afd356a082a1a32e4146cbc5fefef20f
font_01_sfnt_off0000f1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C0 11504 bytes
SHA-256: dece99bc2464acff5f439325f586475ecaf6a7252ac7130ffb9f97b38f37f046