Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d851818f2ae270…

MALICIOUS

PDF

169.3 KB Created: 2020-12-06 04:26:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff45ae5400d44d3c0b1ae6f5637a6198 SHA-1: dd30934282cf651e83f16c3ef970442cf460aaff SHA-256: 50d851818f2ae2708c936cb7b0cb4306e41715923ce4c9bd70dea1182ca5d87f
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 0.9993

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://traffine.ru/123?utm_term=libro+la+raza+cosmica+pdf PDF link annotation
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/d1aa99e1a7.pdfIn PDF document text
    • https://josadezabo.weebly.com/uploads/1/3/4/4/134490641/pumamurukuti_fitozovosowir.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/bab834880.pdfIn PDF document text
    • https://lakowabanitewot.weebly.com/uploads/1/3/4/8/134898259/gulaki.pdfIn PDF document text
    • https://vawavujak.weebly.com/uploads/1/3/4/3/134350312/96a053e23ea9784.pdfIn PDF document text
    • https://zarujiwimil.weebly.com/uploads/1/3/4/9/134900424/0be7ab0c486a2.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/megulu/cantate_domino_partitura.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13897403f5353fd97dbbe/t/5fcbd80e85bc3a28a6160166/1607194639369/jebezubisovuvida.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/bevolomufaraf.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/elements_of_theatre_composition_motion.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc647ae1452f90b7f09ad38/t/5fca34bb9c93c058c48e7554/1607087291807/65942324746.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b4e4c89e1c4b8fbd626a/t/5fc3b7875147b14804a47357/1606662023531/atividades_de_portugues_5_ano.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/85413826675.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24644 5432 bytes
SHA-256: cec5a28e8b78e3c72eee185cbfe63491820029f28d08d3f7d6b054769510b3fa
font_01_sfnt_off000258ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x258AE 12376 bytes
SHA-256: 66b62b1fe816a30410f9f60b7a43b012e06d7d82b0cfeee313ee3d0edb08d8a7
font_02_sfnt_off00028152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28152 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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