Malicious PDF — malware analysis report

Static analysis result for SHA-256 68332f3f3f59e0d6…

MALICIOUS

PDF

83.6 KB Created: 2021-03-20 19:21:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7ad94d43abff9aac5a3201002acffb24 SHA-1: 95189f27703a7bbf21222363d025b5cdc440c7e7 SHA-256: 68332f3f3f59e0d692f3a85d33a11d594a8b02a02b7fda06fbf091e6d2f6fed9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://resalured.ru/wix?keyword=scosche+magic+mount PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490516/normal_5ffb9fe8d1bbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474980/normal_6010323f9bb57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_60109c99969be.pdfIn PDF document text
    • http://creditscorehelp.info/java_se_6u211ytf5x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_6016932b8b753.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/VFjaMjj/puduwovadowaduzifumelire.pdfIn PDF document text
    • http://retys.fun/solidworks_student_free_trial4r2jf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530323/normal_5fd7b18278549.pdfIn PDF document text
    • http://rating-bookmaker.ru/magejedigk4pf.pdfIn PDF document text
    • http://easterthjg.com/zuvalivozimotoadmsy.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/fjbjdn7/asana_app_login.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/iahdgjB/rumble_strips_make_music.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://704d67de-a0ba-412a-a77d-f8c4cf0d88a3.filesusr.com/ugd/a83d94_fe8e4823508642b1892304b3f6fffcbd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jadere/sound_blaster_beamforming_microphone.pdfIn PDF document text
    • https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_63d02296e0aa4a838a48f67ca113a2c9.pdf?index=trueIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_e5bee7daee6447a6b63f29a0172a0ab0.pdf?index=trueIn PDF document text
    • https://b2fc43c4-60ab-4dc1-a1c8-84833fda4e2a.filesusr.com/ugd/37321e_8114c4ba87c141e1848b91f6165dbfa2.pdf?index=trueIn PDF document text
    • http://zepogofeto.epizy.com/is_the_magna_carta_still_in_effect.pdfIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_2146407203e04d1dafbfee5171fecb3c.pdf?index=trueIn PDF document text
    • http://kogisovaf.epizy.com/wordpress_email_template_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/2564695469.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_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 5068 bytes
SHA-256: 45f91450d351cfa069736d7a376a9dce2add2a51ddb540bbdd6cf17d38b53c9f
font_01_sfnt_off0001093a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093A 11928 bytes
SHA-256: de6a8939d260a1f65a8aa253da2f8dcf54780983879120d1c38cbac3caf70f31
font_02_sfnt_off000131d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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