Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bb4d9e6611af7f…

MALICIOUS

PDF

116.2 KB Created: 2021-03-12 18:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4831110205131c26ec68d0cf2158ada2 SHA-1: 7e9dfc462a1f2f73cd303c594875000ada962f49 SHA-256: e0bb4d9e6611af7fabf0a575e3e565918c137870b57b16b8c0e41d814d721dd6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or download further malware. No scripts were extracted, but the overall structure and embedded URI suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/award?keyword=ada+lovelace+algorithm+pdf
    • https://static.s123-cdn-static.com/uploads/4393188/normal_5fffd2773b0b1.pdf
    • http://bubolikava.22web.org/acdsee_16_keygen_free_full_version.pdf
    • https://cdn-cms.f-static.net/uploads/4480187/normal_602b11f3e6e9e.pdf
    • http://zanovekolasin.mywebcommunity.org/besum.pdf
    • https://cdn-cms.f-static.net/uploads/4386618/normal_601fdd2b9eba0.pdf
    • http://gewututikame.getenjoyment.net/55225254822.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://molujafit.atwebpages.com/92245228661.pdf
    • https://uploads.strikinglycdn.com/files/4fb241f6-9614-48a5-808e-7306d46122c9/ririvimegisedan.pdf
    • https://uploads.strikinglycdn.com/files/8b18ac54-357f-49b5-a61a-ccfea3745987/85941306575.pdf
    • http://tekojexabutixas.epizy.com/95000040345.pdf
    • https://uploads.strikinglycdn.com/files/675abb16-43f6-48c5-922f-0bc9e620c4d6/93123281546.pdf
    • https://uploads.strikinglycdn.com/files/7c56d5e8-7597-404e-a4c9-61109f1f707f/fozasuwononukivutorudep.pdf
    • https://uploads.strikinglycdn.com/files/8c9a6444-61fe-46cd-93dd-498a64b47c74/fiponuwofe.pdf
    • https://uploads.strikinglycdn.com/files/097d8529-c68d-4d90-89e3-fe51c2603e5c/marbury_vs_madison_easy_summary.pdf
    • https://uploads.strikinglycdn.com/files/70a0bcdd-a9a9-4de7-8b57-b5192b445074/jewom.pdf
    • https://uploads.strikinglycdn.com/files/e824dfa0-16b2-412b-bedf-acf275c192e3/vubusalodurorimarozusukux.pdf
    • https://uploads.strikinglycdn.com/files/ed489e1e-ceaa-439f-8689-11fcd7c3c208/oster_bread_machine_ckstbrtw20_paddle.pdf
    • https://uploads.strikinglycdn.com/files/e967c1a2-d67f-4865-8bad-7d395c43808a/what_are_the_characteristics_of_an_evil_person.pdf
    • http://tosodesuvivat.epizy.com/installation_guidelines_silva_cell.pdf
    • https://uploads.strikinglycdn.com/files/88b8d27d-a835-404a-bc66-1d21862be9b5/what_are_the_7_love_languages.pdf
    • https://uploads.strikinglycdn.com/files/00263cfc-6481-45bd-9f86-282c1484a3aa/me_myself_and_lies_a_thought_closet_makeover_by_jennifer_rothschild.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_off00018c9c.bin
a4ce8e5aa6e57d0488b15458ee1cde0c02c366db2d4ccb0af0375d5757e995bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18C9C 5440 bytes
font_01_sfnt_off00019eff.bin
2bd438aad5b64b4cff49e8cb66095557ed4c1259c60ae407d81e94d3e4199769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19EFF 10588 bytes

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