Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55089e8643aa35c…

MALICIOUS

PDF

77.5 KB Created: 2021-06-07 21:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 113f7fab2ed78bdfe39668b4e52a4d01 SHA-1: e499c9077283cdc9f63a9920b4d99061d0cc72dd SHA-256: e55089e8643aa35c9b9a21d8c4a424be4a7e6204607ff1951ec9c0fe9baea0a5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/123?utm_term=apa+style+guide+in+text+citations PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fd08f0caa791.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417327/normal_5fc8d40fc4c86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420222/normal_600fda18a60b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493549/normal_5fd9fcbf7b606.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4377113/normal_60b4afe7a0b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481515/normal_60510ed883d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_605e136e97c04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491436/normal_602445a30bac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_601fd72244c54.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/54fbbf86-6beb-4767-8ce0-99155781dd24/what_is_netflixs_product.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d0ab744-b451-43ea-9797-dced6af55136/how_to_do_steps_6_and_7_aa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050c86a5-ed9c-46c4-bf5b-e1a3c4af2fd8/cnn_breaking_news_live_streaming_now.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/w/file/fetch/144449280/tv_dish_multi_switching_adapter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf31c273-7ced-4668-861d-460848a0e285/vidoviwikikugotoron.pdfIn PDF document text
    • http://xumamiz.pbworks.com/f/96315077076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4836b838-bcb5-4257-ba92-b4b6b54835fd/2005_cadillac_sts_transmission_fluid_capacity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc15b876-b8c5-49ca-82f9-87a236c4666d/deritefojipozifuk.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/f/friction_on_horizontal_and_inclined_plane_lab_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/206d07ea-4611-45a1-ad0b-a1ed25c44601/how_to_do_table_topics.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_off0000f0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A8 5304 bytes
SHA-256: 29aba7280725c35183937c189532d4f914726ca6a7196fbdea37626c89319f89
font_01_sfnt_off000102d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D8 11200 bytes
SHA-256: 728168e360802c217b3e26492a4e3c331e6ef5693870444cda9c07643df6401c

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