Malicious PDF — malware analysis report

Static analysis result for SHA-256 0430a1e0822b1964…

MALICIOUS

PDF

67.2 KB Created: 2020-11-11 14:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c4ed5d8a23b4ab3664d7e373c8b3b8e7 SHA-1: 27051959baf7e4960a476709d761a949ffdbaa65 SHA-256: 0430a1e0822b1964489bb1b7586a50be61d0da2e605ca9d2eb04a8242b399244
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/aws?utm_term=fitness+reality+810xlt+reddit PDF link annotation
    • https://nupariredarig.weebly.com/uploads/1/3/4/3/134357859/5428780.pdfIn PDF document text
    • https://bujufanabatoxiv.weebly.com/uploads/1/3/4/5/134598972/worax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_5fa1d03d05842.pdfIn PDF document text
    • https://xififaxapid.weebly.com/uploads/1/3/4/3/134344339/noxafamuzinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_5f9eae21084cc.pdfIn PDF document text
    • https://dokipodaj.weebly.com/uploads/1/3/4/3/134306773/ruvotolilibovotive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/04bfe112-e075-4355-9e98-9eb0138724bf/zesukisanekuda.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/83823957900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a84e5ff-09f7-475c-a985-761cffd3bd78/batusobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51f6b0fe-b0fa-487a-892d-e6542732f662/dark_souls_2_loyce_greatsword_build.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_off0000c921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC921 5332 bytes
SHA-256: 3e5e7298e1a5554cdba9a5314b19573f2a4e2c62c6124f8f02221ef10d80a8f9
font_01_sfnt_off0000db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB59 10744 bytes
SHA-256: fecd2615fc0432f9d5158f302db20998e2e409345122b8a7dde98662090fd9a6

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