Malicious PDF — malware analysis report

Static analysis result for SHA-256 602ad561652d59d8…

MALICIOUS

PDF

60.2 KB Created: 2020-12-02 03:51:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7910276b2db9e815b8a7ff57a2edf03f SHA-1: 186ebb3ab0941da20eeac2f5fbba6703588dede9 SHA-256: 602ad561652d59d87ab3fe8e127774b58c422dc5d02cc2de0192fab14cee71a9
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or to initiate a further download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://trafficel.ru/123?utm_term=cape+elizabeth+middle+school PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3c201db-ef2f-49b4-86c5-cdf0fece114f/xokonumagusevotizotid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1189173fb5383b69a99a/1606291863403/jaxuzevizoribajun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdef3b3c02f22b9dd22085/1606283067566/90910104762.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cd9260f2895dc1e75cb0/t/5fc1c4a618e72e5fdb19a853/1606534313239/vebobosiwojupoli.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/juicedefender_ultimate_apk_onhax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42fa6585-195d-4ec3-bbbb-ec143ea2bd48/79993802158.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/974_area_code_nz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc106a17848ba205d193829/t/5fc12c02bc819f1cf40230ae/1606495235838/official_cpc_certification_study_guide_2018_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/402e8a02-e933-463c-bb07-083757a566c2/bipewitiluzefafapazazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1465d88f-734a-49e5-bcd1-41760b69c410/boeing_737-900_united_safety.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_off0000afc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC3 5312 bytes
SHA-256: 99105b925d3966a82e1e4bc7917669be61c8eb362e9ba67edc51344f332746d7
font_01_sfnt_off0000c1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A7 10196 bytes
SHA-256: 55a58e9348a8bdb2c4a34ecb051c6ee94d0365a7fe0ec489345f5da5bcdae9c9