Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77ed7fcc4da7ea6…

MALICIOUS

PDF

66.9 KB Created: 2020-12-23 10:08:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 833392495c8e4b5e3976b6c6ca390b42 SHA-1: 25966b773c99c8e2bc987cebb72a0702d86b319a SHA-256: b77ed7fcc4da7ea6c0961729d1853670d12e912dc1959daca4660b1acc5aaba6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering 'powerpoint templates free google slides', a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the embedded URI is the primary indicator of the attack pattern.

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://trafficel.ru/aws?utm_term=powerpoint+templates+free+google+slides PDF link annotation
    • https://wiludexubusut.weebly.com/uploads/1/3/2/7/132740186/1462889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f9cb316c377b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8ab76b8fd54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ef8407-95ee-4111-96cd-e99b633ca24b/19351305943.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/beautiful_good_morning_pictures_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/sql_server_2016_new_features_for_dba.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/96445659646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee57a8e-c2f2-499e-955d-0c1ed806f0b5/45016790798.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/bibliografia_apa_libro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce40823775b77c105f7e6e/t/5fd1782aad61ab583180ad1e/1607563306758/mirtazapine_for_sleep_dose.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/immunization_history_form_purdue.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_off0000c79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79C 5456 bytes
SHA-256: fe6dc4e8f7b876050b91db8b4d9772ea662143b2dbef539751ac7380bbceae82
font_01_sfnt_off0000da24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA24 10580 bytes
SHA-256: 015e9a6f4ea92f8a1d81d9a9c51ae3b668dcc5affe20409a13bcdc7f019babea