Malicious PDF — malware analysis report

Static analysis result for SHA-256 f160a2a1d884744c…

MALICIOUS

PDF

67.9 KB Created: 2020-12-20 22:04:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9da213776a1de005c52972e515f324 SHA-1: 13b5c652f4e7c621ccabe3871404868e3c03875a SHA-256: f160a2a1d884744c15de1624ffd9bbcd9c3a2a9c181163e4a436539e510449df
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Experimentos de quimica organica'. No scripts were extracted, but the presence of an external URI is a strong indicator of a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=experimentos+de+quimica+organica
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5fd03f873ab02.pdf
    • https://cdn-cms.f-static.net/uploads/4420930/normal_5fbf073e9e954.pdf
    • https://cdn-cms.f-static.net/uploads/4451567/normal_5fbf12935609c.pdf
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5fddda8de87ee.pdf
    • https://cdn-cms.f-static.net/uploads/4378165/normal_5f8f8fc3bec73.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pobixedele/blackstar_id_core_100_manual_espaol.pdf
    • https://s3.amazonaws.com/zesixefe/daxipafirep.pdf
    • https://static1.squarespace.com/static/5fceec44665af30590bc5abc/t/5fd6b466226e9048fac37e39/1607906407178/56698943870.pdf
    • https://uploads.strikinglycdn.com/files/abb4e5bf-0972-4e91-a413-2d42ccf46483/albert_einstein_powerpoint_ks1.pdf
    • https://s3.amazonaws.com/napoledunadigo/pathology_mcq_books_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caad.bin
2ddbd093a7d0b062a364be9bc3c24e6e416c923297237c2b91fedc327b0d50df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAAD 5512 bytes
font_01_sfnt_off0000dd4f.bin
c69f5ce546ecf0573beefaf7edf7de62ca3d3e35d9ee3572764e61db00bb88b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4F 11584 bytes

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