Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17e1acdb8c82443…

MALICIOUS

PDF

80.3 KB Created: 2020-11-13 04:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6761ec7b891eca1f565cbe7062a8d3c0 SHA-1: c01e5b1e04ec4d08540a08529ff123294ca6caeb SHA-256: f17e1acdb8c82443c41f82647547b8e7c52fe4e51b1cc10f4b15bde8efe31d07
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, suggests a lure related to 'Adventist 28 fundamental beliefs pdf', indicating a phishing or social engineering attempt. No scripts were extracted, but the presence of an external URI and the high confidence ML detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=adventist+28+fundamental+beliefs+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417207/normal_5fa1ffd5e5edf.pdfIn PDF document text
    • https://nukewixe.weebly.com/uploads/1/3/4/3/134385223/pajojawefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_5f98821811c66.pdfIn PDF document text
    • https://powizosiki.weebly.com/uploads/1/3/4/0/134041047/logusir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f86f4da87dc1.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/4548191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f89278e90c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_5f94954fc3797.pdfIn PDF document text
    • https://nasupatuvijel.weebly.com/uploads/1/3/4/6/134610874/zuxiluniketejog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5faba3a867fdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mesotodimus/vutujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e61a23-5e4a-4043-9bc6-88b52eab6d4b/watch_new_moon_online_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF95 5376 bytes
SHA-256: 204ffafb7c3b859f5be6f1293cb4a76d145b5451df4b5fcb27da49c469a696e0
font_01_sfnt_off000101c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 10540 bytes
SHA-256: bfce325f86ba66b24838bcf1197d80d391886ddecf9a83d3ffbf2125be376a91
font_02_sfnt_off000125f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125F4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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