Malicious PDF — malware analysis report

Static analysis result for SHA-256 84646faf1efe435d…

MALICIOUS

PDF

73.6 KB Created: 2021-02-22 18:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 63d88d82ca5d451b0870a01fa3d71068 SHA-1: 28abe13d1e69d97226c26d55c1e1cd17b3041368 SHA-256: 84646faf1efe435d84472b2e4b3fb8d1137d4fe7c6cedcb7b044882f9050d1f3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body contains a deceptive lure related to local services, and an external URI pointing to 'crophysi.ru' was extracted, likely serving as a malicious redirect. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing attempt to direct users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/strik?utm_term=are+nail+places+open+near+me PDF link annotation
    • https://cdn.sqhk.co/vilomikov/Shah9je/jesideriguxuvobinedi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411219/normal_5ff41c90151ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414169/normal_6013781e2ef8d.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/ie27hb0/xufatiravogajopo.pdfIn PDF document text
    • http://hopecommunitynaz.com/95171177167bhzn7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ximupuv/pegefuton.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/my_beautifier_free_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/exodus_live_tv_apk_2019.pdfIn PDF document text
    • http://kuxomexepus.epizy.com/vs_code_python_black_formatter.pdfIn PDF document text
    • http://vevemaj.rf.gd/54674512088.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/individual_development_plan_examples_for_senior_managers.pdfIn PDF document text
    • http://logiratawune.rf.gd/18966257645.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_off0000d825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD825 4776 bytes
SHA-256: bda59e434dfd1a1413bc61d1f7a74df5d5245b7cb47006648538a16eb05b280f
font_01_sfnt_off0000e820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE820 10428 bytes
SHA-256: f0f3e2cc9a9d800c7a1bb55ac3edc63c6d2844ac5c67c94db6fe449ff4403125
font_02_sfnt_off00010b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B24 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378