Malicious PDF — malware analysis report

Static analysis result for SHA-256 38822ed77f0e04a7…

MALICIOUS

PDF

66.6 KB Created: 2020-12-16 18:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 547363ed0440927ce866b99a172b761a SHA-1: 0364e223c772dea37259ac38cdaa33b551ac6c07 SHA-256: 38822ed77f0e04a71dfb56d93688a9c76f26ccfd9eac8fa0370d704c373e3320
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafffi.ru', which is likely a malicious domain used to host phishing content or distribute further malware. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Miles river middle school hours'. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URL.

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://trafffi.ru/123?utm_term=miles+river+middle+school+hours PDF link annotation
    • 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://uploads.strikinglycdn.com/files/094fa91e-9c56-4f11-8780-4e83c9dff0c1/luvotefam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e6cadd4-54a2-4d0b-a3a4-5ab46d0013bc/fokigomoj.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/auspices_crossword_answer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c12b92c50b1a1e98b3c9/t/5fcc7df7920f47545b8cea43/1607237112799/jonenumidofupaxigoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56ce368-304d-485d-9107-272098797342/dezefokijasakareka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aa5268612547ed696d4d/t/5fc55263f8cdb769c693ea00/1606767203579/xabeponuweliroxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a87ba7fa-b1c8-42d1-bff1-618469f4a711/eating_out_the_open_weekend_free_online.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/reading_worksheets_for_7th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f455ea5-dfbd-4fd5-8565-d87f6181d670/managing_the_training_of_weightlifters.pdfIn PDF document text
    • https://s3.amazonaws.com/wepeliniru/42949913346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38014c21-4741-40b0-89e1-67287213e93f/sadupojulufuvaverelu.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/lake_ontario_fishing_report_2018.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_off0000bc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC45 4728 bytes
SHA-256: 875bf1d71570c903a95a2383ff53225b7eb6f0420c7ffd0879e8056e87268d4e
font_01_sfnt_off0000cc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC55 10380 bytes
SHA-256: c1020267014bb3a52b6e4d5ff5b7ea37bfe2a22547925b7985cc5ec27f8e8faa
font_02_sfnt_off0000efbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBB 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.