Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb229056cb7b330c…

MALICIOUS

PDF

82.0 KB Created: 2021-01-25 18:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: daa371d86361a1a376934ea5510be405 SHA-1: 71116492974cf61e5820f7ef9cc4648096d0d18f SHA-256: eb229056cb7b330cf8c43017c38e86d483d2c92626b0ad0bd127fd13676c462b
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URI pointing to a suspicious domain, traffnew.ru, which is likely used for phishing or to serve a secondary payload. The PDF structure itself also shows signs of manipulation with duplicate object bodies.

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=palliative+performance+scale+%2528pps%2529+portugues PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404745/normal_5fc770a21c901.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5fe147327e3ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480582/normal_5fcb6ee34de38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496014/normal_6005f81b5d5cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501659/normal_5fcaf792d5be3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477162/normal_5fe191506d447.pdfIn PDF document text
    • http://mnogolidov.xyz/lusamesikukewo2gta8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424347/normal_5fd7374de067a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388169/normal_5ffcac959484a.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/genedonapubefe/blanchard_macroeconomics_7th.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/jigapilifozumi.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/33309346968.pdfIn PDF document text
    • http://fukutinupamebo.rf.gd/96398066391.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/nosatax.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/dawes_touring_bike_size_guide.pdfIn PDF document text
    • http://bekovomojuto.epizy.com/82580637880.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_off0000ff4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4D 5552 bytes
SHA-256: 694eead614091607780b36dfe18104ffe050e1d24e53d12659df4fe2d329a3a1
font_01_sfnt_off00011232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11232 12560 bytes
SHA-256: 8bb1ea9cf3918605e21687b56f9945917969e69627cf954b5d7c63d4dc7ef081

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