Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48a0ce69607d1db…

MALICIOUS

PDF

74.0 KB Created: 2020-11-30 18:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: da41bf637aa9bb91acd3cbd0ebe97f20 SHA-1: f18f5ae9d8788df47e8e8bc208fd0ab33e9c68b2 SHA-256: a48a0ce69607d1db7a5c6b7c9a313a89e6328c0193d1243fd3373f25e20e61ab
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 URI pointing to a suspicious domain, which is likely intended to host a malicious payload or phishing page. No scripts were extracted, but the presence of the malicious URL 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://trafffe.ru/123?utm_term=p+letter+words+in+english PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375341/normal_5fbd5c281a100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f934dacc8a23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374372/normal_5f8f4c4d5afb3.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/titugome/2019_ap_statistics_free_response_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/rudefewebaxodo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc1265b9b1ed0353804db57/1606493788403/83352898578.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/13261229243.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/ageless_body_timeless_mind_full.pdfIn PDF document text
    • https://s3.amazonaws.com/gebaxovudofe/xoluguxererikuruxev.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/microcal_origin_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/reremev.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/60802782649.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf4ca173fb5383b677015/1606284491852/gedafajivomew.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/dolimubiwofone.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB16 4968 bytes
SHA-256: 82c00771e22aca5f2ae8516fdb818c5574710be8a380927397a4fe197d3674fc
font_01_sfnt_off0000ec03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC03 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000f766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF766 10468 bytes
SHA-256: 70b08a2533e8775a0d3c58486ba484b5fd770b5c5372eec81ecc82c4d4ca5112

Open this report in the interactive analyzer, or submit your own file for analysis.