Malicious PDF — malware analysis report

Static analysis result for SHA-256 94190c85d7266194…

MALICIOUS

PDF

66.5 KB Created: 2020-11-13 07:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a042957e5e153d87be9e83b50718d014 SHA-1: d560ca028ea16ee10ca5540965b6ac4263c9a6cc SHA-256: 94190c85d726619465c854b1edb6b4b3ee6cbf1eb6c51d92af9dbccd31ddb6fc
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL strongly suggests a phishing or credential harvesting attempt.

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://trafficel.ru/aws?utm_term=additive+manufacturing+of+metals+milewski+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5fa11f3d1685e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5fa90d6a7207c.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/7f7407fd-d73f-4afc-b512-edf50469f4d5/69451627310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b364cf-0940-4a4c-a9f2-107e81f6acbc/uso_del_punto_y_coma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8798a48-0278-4e57-99b7-64637d752104/mizufawofetojugezuni.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/cavalleria_rusticana_di_verga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669d2f09-5f15-4ba2-9d8f-0d63926f5aca/77528020336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dd8caa2-48bb-4569-b9a2-5e187de3def8/phoenix_craigslist_protest_jobs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6490517-4c5a-4968-be0b-f3688b38469d/tanawisedimotetalasixis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4128d8e4-7a4a-4c7e-86c8-e4ff0aba7a7f/26681187045.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/919a0c86-02c9-4a9c-87fe-15094156a057/82811335974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76587e6b-45a4-4614-ae66-599964b5574f/guvofufikutatesemutidos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd2fe95-474d-4a31-908e-f06c614a9d21/31863839206.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_off0000c5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C0 5680 bytes
SHA-256: f1194b611911175d534cfa1f6a25773f1fc4e52ddb55156d5b21f770e081004c
font_01_sfnt_off0000d91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91E 10512 bytes
SHA-256: 8cc5711de385cd5f6f2f3f85051752c50e118fca6fb42dfab26c627ab3af1a80

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