Malicious PDF — malware analysis report

Static analysis result for SHA-256 051ea772aa696d71…

MALICIOUS

PDF

79.4 KB Created: 2020-12-17 11:55:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2285cd073178559db02fd2669dfa0696 SHA-1: e8a7cce7b07f9912e75b154e1312b77a4b4674db SHA-256: 051ea772aa696d71a61b0acb178a6e3d46f32b6e828a1adffe70399c58ce09ba
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though partially corrupted, suggests a lure related to 'hereditary angioneurotic edema' to entice users to click the malicious link.

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://trafficel.ru/aws?utm_term=hereditary+angioneurotic+edema+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369525/normal_5f92eb0b5ef9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376382/normal_5fd1512953fbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_5fb4342410313.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://uploads.strikinglycdn.com/files/4739706f-1fc0-421a-ac94-3fda5c994ede/guvejaf.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/55428344298.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/99836088326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fbb256d-13be-497e-b872-9487013c455e/figawiwupap.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/simple_bending_equation.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/jawuwemenifubujakemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e08b54d8-d5da-4c13-874a-0bb1b53a62c7/85555250283.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/rotmg_forbidden_jungle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1926bf2-eebd-4bb8-b362-26fcd8115d76/vavalujukezorebegijok.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_off0000eb52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB52 5212 bytes
SHA-256: d2d8755765387455288c164d14792ad4a9f747a006721e503b640a4dc86bb870
font_01_sfnt_off0000fcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFA 11084 bytes
SHA-256: e36f669cc1d2cd94b2d6db87174fd42d627d2d28b7580f553aab589eda34eede
font_02_sfnt_off0001228b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1228B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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