Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea3f7f4a7ec4c3a…

MALICIOUS

PDF

85.7 KB Created: 2020-12-16 03:51:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 5e904001f59fe492c579d1b333fa321d SHA-1: ec287fd30fb1bf5024d9695a054fc903dbb32a5e SHA-256: aea3f7f4a7ec4c3a3cb66e13aec7aa9639b22987a7c381105330241231158731
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://trafffi.ru/aws?utm_term=cbse+full+form+name', which is likely the malicious payload delivery or phishing site. The document body, though heavily obfuscated, contains text related to 'Cbse full form name', suggesting a lure to attract victims.

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://trafffi.ru/aws?utm_term=cbse+full+form+name PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/72385939365.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/jawowuvijesarenuwuzim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c5af605-5772-4b0b-9a3d-afc5ecf18a24/93436774114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d47c3fb5-dec0-4a1c-9d63-297ad9d97151/inside_the_actors_studio_robin_williams_scarf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed2aad6d-3ab7-4e3f-accf-517c98e6635b/facebook_photo_sync.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3d27029-d4c4-4cbd-bd43-3a29ccf0fddb/figovevu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5677ef9866f3fd2f21712/t/5fc67d989ee0f32b873521a4/1606843800591/77851348813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc8916b6-3445-479f-a135-ce3ba80a0dac/kugikoxibuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8fe1ef-373f-4a1d-a882-d0a753fa1121/comentario_biblico_mundo_hispano_hechos.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/trojan_horse_allusion_in_fences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f43a85b-ec39-44ed-857a-e171d4f9e57f/bemuzagozulona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f12a32-5981-41d9-93b2-71e71e3c18a7/2754796641.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/hardin_county_high_school_graduation_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf4895db6f322e656e3e16/t/5fd670b2313c42342b8f5873/1607889074892/htmlwebpackplugin_template_scripts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8dbb88-13e9-4c31-948c-4a9c12b785f8/biwipaz.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/39659878324.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/ruzoxexegavemojuku.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_off0000fb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB47 4960 bytes
SHA-256: e87aa1eabec7d557e5c7491b583579150fbd39c774b8a455425227c754af2ffe
font_01_sfnt_off00010c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C05 11172 bytes
SHA-256: 3525a3bb7c928f3642695a1823062a263feb25e8dc8f07d9a65b302b267b5282
font_02_sfnt_off00013218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13218 6732 bytes
SHA-256: 46cecc56d15bd2b6e4cd8ff0e685861de94efb3d15c657ffd3f3c9902f904e21

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