Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1a986cd4cfdcf4…

MALICIOUS

PDF

79.9 KB Created: 2021-06-09 00:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 84869c58839ae8c288f3f3544f486a82 SHA-1: 0deb6e2a510a8cbfccf58450e03a08132ec6d2d3 SHA-256: ea1a986cd4cfdcf4448eefd3370e583347924047e909a7957e774f5168ac3420
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URL pointing to 'archism.ru', which is likely used to deliver a malicious payload or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://archism.ru/pbw?utm_term=lista+de+cotejo+ventajas+y+desventajas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420748/normal_602ffc3562881.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4406454/normal_60b19f978fd22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374976/normal_602ca6400e546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393521/normal_605ffa5b28612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_60b80bb1d5f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467601/normal_5ff032dea50a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_6012962142f06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383446/normal_603a2c330870a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370090/normal_603aaeb4ed91b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490930/normal_6029c5e537fbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444630/normal_5fe64478ccc54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b8026e6-3b17-4e1c-84f0-70c795800a8e/percy_jackson_hindi_dubbed_300mb_movie_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c57b75db-b2d9-4543-99ff-fd07d2f10e3e/brother_mfc-6490cw_black_ink_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee2dd0f-7e63-4f54-b41a-dc98bf4c9e35/jusawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47a7af70-d861-4743-b263-d7ebb8523e4d/23113917200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bdd8b29-9620-4135-830c-e42a0dbc78bf/fafibobivira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43876fea-22fa-42bc-8982-f38b0c5f3d0c/72477923082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff7db10-95dc-49a9-85e6-3a18f88e92b4/nuzekotosasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/922648c4-ab16-4cb6-87f7-4848683c723a/45436414667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5331509-1a61-49e4-ba8c-813eb7a71c59/cnn_latest_news_today_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24c20b3e-d96d-40df-bcd7-fe2638a04060/2005_jeep_grand_cherokee_limited_5.7_hemi_pcm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee593a71-0534-4fc9-91f1-cc0d67d73cce/dewebawibonamabak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99d8754-be3b-4564-a981-5b7420d1fff1/ben_hur_2016_dual_audio_hindi_full_movie_480p_720p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90230958-10a1-42b4-9c55-73bec14d1f38/59888175686.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_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 4984 bytes
SHA-256: f27fee24339d8625fa9053f9572a41fea5189e0d0ce7f86e1e2dfb40fc2c2e0c
font_01_sfnt_off00010b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2A 12008 bytes
SHA-256: a125d8c62da71be673f97ae94764d51d32b0761f4f086cfed901dab391570bc9

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