Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d84962834be9fee…

MALICIOUS

PDF

66.2 KB Created: 2020-11-25 01:42:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79f0a07eff4b5a0ac1288546101c4886 SHA-1: d2d6c2258bafdd848b2b8c6110573d9a5edeb994 SHA-256: 3d84962834be9fee3f1739b97ef6c18d9333d1a1b74070ce0a9603ca55fcf045
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as a legitimate lookup service. This URL is likely intended to lead to a phishing or malware download site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://traffnew.ru/123?utm_term=coach+wallet+serial+number+lookup
    • https://cdn-cms.f-static.net/uploads/4449615/normal_5fb3dad008769.pdf
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5fbcb9788a2e8.pdf
    • https://cdn-cms.f-static.net/uploads/4487432/normal_5fb40afde13a0.pdf
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8a0d837cb50.pdf
    • https://cdn-cms.f-static.net/uploads/4384045/normal_5f9c2ade61a92.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/df39e7f7-af6c-4d88-94f1-b8fe9d022010/gorozasoni.pdf
    • https://uploads.strikinglycdn.com/files/1d08c549-ab00-460b-9b89-56d0184d82d2/ritiro.pdf
    • https://s3.amazonaws.com/gofiguj/bafevejadavur.pdf
    • https://s3.amazonaws.com/bupaxomu/dean_graziosi_wiki.pdf
    • https://uploads.strikinglycdn.com/files/8bd2d61b-eb17-4921-a7b4-256236c32079/nujituminolo.pdf
    • https://s3.amazonaws.com/bisapovepizaj/40142017267.pdf
    • https://s3.amazonaws.com/jonora/chase_mobile_app_apk_download.pdf
    • https://uploads.strikinglycdn.com/files/5f6b7ecb-b7cd-4879-a807-887a8600cf4b/accords_quelque_chose_de_tennessee.pdf
    • https://s3.amazonaws.com/ruzumeb/22790351904.pdf
    • https://uploads.strikinglycdn.com/files/b7565331-81d4-4a08-859c-075b20813960/zozuzekara.pdf
    • https://uploads.strikinglycdn.com/files/6ce1be25-6d57-4041-89ca-6b00c6059896/62724388747.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_off0000c7a2.bin
6c4d5bb00f0fc749df4f4460c820a138d1daf3c724ef7f38508318da100e5e8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A2 5376 bytes
font_01_sfnt_off0000d9c5.bin
76f85c3551e4e7ac822aebb52c883f0cb54e9cdf5e2fd8763a9b6cf4dc20e986		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C5 9892 bytes

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