Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe77997110a5b68d…

MALICIOUS

PDF

67.2 KB Created: 2020-11-22 14:44:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: b71c4c46c1a19b8a917a65129ffc7385 SHA-1: 9ee10a58a1416c79c923a5b0b03786a4ab7ea04c SHA-256: fe77997110a5b68d8a971408a3e9bdcdd74eb9103f54a4ee49eb703db368f64f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading a secondary payload or visiting a phishing site. No scripts were extracted, but the overall structure and embedded URI suggest a phishing or malware distribution attempt.

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://traffnew.ru/123?utm_term=storm+lover+kai+psp+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415524/normal_5f99247f00c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_5f88c1fd13245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375083/normal_5f93ae90db50a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_5faa601e796bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423155/normal_5f98588c0a4f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450635/normal_5fa2ae5fdb72e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5fa1b4ccd2551.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/betimugi/motorcycle_tow_dolly.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/12685190616.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/75726148765.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/shakespeare_sonnet_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/upper_and_lowercase_letter_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/bacterial_transformation_experiment_results.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_off0000c554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC554 5508 bytes
SHA-256: e671f7c7d222c2f90a23bfc6faa47d22245564c6dcd5d85d9d625298c81fe4fb
font_01_sfnt_off0000d7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F7 11496 bytes
SHA-256: 7176545af4d3ace834a744dc53b9e1560bc1a5f634cbae5fbf73b707c322fd1e