PDF static analysis report

Static analysis result for SHA-256 051b0316fcb420f4…

SUSPICIOUS

PDF

34.4 KB Created: 2020-04-04 08:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: ea6cdcd8273cec59e03fe95db1b431ff SHA-1: f498a7e37945b1987131e6f84495ae60cb533398 SHA-256: 051b0316fcb420f4c5628950454e41ebe8ef426333048ada6ff7cb869b9a9aab
44 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier strongly indicates maliciousness, and the presence of a visual download button suggests a lure. Multiple embedded URLs point to potentially malicious PDF files, indicating a likely attempt to deliver a second-stage payload. No scripts were extracted, limiting further analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://brendaleelewis.com/uploads/1/3/1/1/131164076/131164076.html#clase+2+division+2+group+g PDF link annotation
    • http://cuoij.com/uploads/1/3/0/5/130551251/dipigoz.pdfIn PDF document text
    • http://goldcoastfamilybakeryandcafe.com/uploads/1/3/0/3/130323762/4564827.pdfIn PDF document text
    • http://simyasuaritma.com/uploads/1/3/0/6/130621870/xuridobixef_nafotoso_xolomemup.pdfIn PDF document text
    • http://pglconstruction.com/uploads/1/3/0/7/130739994/nubimimurasof.pdfIn PDF document text
    • http://jerrygarciaarts.com/uploads/1/3/0/4/130483617/rojogu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFB 8592 bytes
SHA-256: 9e4f5a6a4182fe49cdf70a879bff992c77c2b5a32234d91f4afbb4489a00ea22

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