Malicious PDF — malware analysis report

Static analysis result for SHA-256 98342bb27b089422…

MALICIOUS

PDF

95.7 KB Created: 2021-01-17 00:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1a3b2ceaa3a978153cd80e05552b1288 SHA-1: 73cbd958a0826316e827f1989762a9e246b3aec4 SHA-256: 98342bb27b089422270b0751a12a1c83f662dfa485d12a94cbc0499e737fb992
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. An external URI, 'https://traffnew.ru/123?utm_term=westminster+elementary+school+principal', was extracted, suggesting a phishing or malware delivery attempt. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, but no clear textual lure was discernible.

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=westminster+elementary+school+principal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422145/normal_5f9cf0b6197e5.pdfIn PDF document text
    • https://site-1168253.mozfiles.com/files/1168253/13868462845.pdfIn PDF document text
    • https://site-1175642.mozfiles.com/files/1175642/money_origami_shirt_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/hiIrico/zeleludon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417023/normal_5fb4ac111e50c.pdfIn PDF document text
    • https://site-1175725.mozfiles.com/files/1175725/inflectional_endings_ed_and_ing_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/PK6ngcN/gramfree._net_payment_proof.pdfIn PDF document text
    • https://site-1247515.mozfiles.com/files/1247515/hentzen_coatings_technical_data_sheets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5ff16ddd39ccc.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/takebemanijewok/98777613688.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/43349349187.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/kasuvotovafuzamasu.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/55183400325.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_off000129fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129FA 5076 bytes
SHA-256: dd9c8cd84c85ef561296b881d184a6cdbd818318946102d5be610adf050fe391
font_01_sfnt_off00013b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0D 12104 bytes
SHA-256: 67cf904833e2a89630e496c4e4f442ce156f21fed7c3e15468fd2bd1438f0345
font_02_sfnt_off0001634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1634B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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