Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aeb78cee18cd01f…

MALICIOUS

PDF

68.5 KB Created: 2021-04-01 11:35:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2762744dbd5296c30ccd786ae2ebf608 SHA-1: af828a0a312328278736b5af357c0920051893f7 SHA-256: 2aeb78cee18cd01ff76f6dc207eaa36de788b98d03e53f532732ad3092657e70
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/award?keyword=journey+to+the+akashic+records+bill+foss+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460233/normal_6033f5b76a912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424026/normal_602b97b7ad471.pdfIn PDF document text
    • http://defokozixeral.sportsontheweb.net/faweregujubitoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404292/normal_6046d1d47eea4.pdfIn PDF document text
    • http://belepebo.mywebcommunity.org/71100001390.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/99_names_of_allah_list_bangla.pdfIn PDF document text
    • http://fepemewavitik.66ghz.com/fudexixebedakajul.pdfIn PDF document text
    • http://neditaxuvim.getenjoyment.net/19067830991.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/2fbcfb57-241c-415a-b12d-8d216611e57e/skyrim_guide_to_magic.pdfIn PDF document text
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_290dbe0b9e0e45d1926fbba17b811aba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6caef7a-1e47-4d5e-a480-04042f709ee9/forte_pitch_class_set_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/020d6d61-0ca9-4623-a19a-01633236dc4c/fuxaxew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82e6ab8-1f7f-4a5a-890d-776b3d85683a/28789910893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71573876-e34c-4214-a1bc-e1b6f7ea7fa2/7494077216.pdfIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_30968847e0e641d3ae7bdc002a452f00.pdf?index=trueIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_edbbb290f492470d8e5ac5ac19c7b3ae.pdf?index=trueIn PDF document text
    • http://luzigipo.epizy.com/hoo_lee_sheet_meaning.pdfIn PDF document text
    • http://baduwujik.rf.gd/17807259824.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_off0000cde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE8 5540 bytes
SHA-256: cb9507f698a5c21258f46b36a974177f73cd344d24e0ae190770d8e13e2aa99b
font_01_sfnt_off0000e0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BA 10432 bytes
SHA-256: db16aad1fab7299dcaa1f5f260946add441d1489d6c64ae0b8cecb1ae05f1703

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