Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb4ea0803a69558…

MALICIOUS

PDF

70.4 KB Created: 2020-12-03 17:01:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d4f64bac11721105d16a7e90c25f4dde SHA-1: 7adacb8400687b282bab74d2475d7e805fe75e32 SHA-256: edb4ea0803a6955826bdb7157e26e1f92343de328bf79293e954a94039ae58a1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL points to a suspicious domain, likely intended to host a malicious payload or phishing page. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to exploit vulnerabilities or redirect the user to a malicious site, consistent with a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=definition+of+thematic+analysis+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413976/normal_5f9e8aa17bf5b.pdfIn PDF document text
    • https://vodoxakitukep.weebly.com/uploads/1/3/4/3/134335140/xavimujutanirexe.pdfIn PDF document text
    • https://pazovazorukilaz.weebly.com/uploads/1/3/4/6/134673506/xebonixuj.pdfIn PDF document text
    • https://mikezopa.weebly.com/uploads/1/3/4/3/134366842/sominusoxik.pdfIn PDF document text
    • https://wurilulisewanid.weebly.com/uploads/1/3/4/7/134728532/517181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415962/normal_5fa2254012b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_5fadc198a9b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5faf274204f7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415051/normal_5f9d58e479230.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/vaxebisapesi/alienista_ksika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a8f8718-2f5b-47f5-a70a-04e90de07ca7/cafe_luciano_longport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/124c989b-d64f-4cfd-9346-e772f745cfdb/wilcom_embroidery_software_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e301060a-1e31-40ab-9fd3-4f08da090dd2/furutubigunatalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37efbcb4-f03f-4a79-ad31-9579940b706d/getabevewip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3914093-1885-45c0-8be5-5089f80bc7a4/best_zelda_classic_quests.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_off0000d7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EF 5400 bytes
SHA-256: d2256e22f9410c3f6742320c07445de633de1561b055a0c88a3e61d2a2551ed1
font_01_sfnt_off0000ea39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 10428 bytes
SHA-256: bfcb0dc3afb933aca3369683dbffcc1e324321db36b195a84327470e4ec1e000

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