Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff58b8e3460e825…

MALICIOUS

PDF

76.9 KB Created: 2021-03-17 13:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 112fd4745c3f0030bcecaf01655ccc19 SHA-1: 9ad51c0500c4792477d08046c2573dfdf5518a6b SHA-256: 3ff58b8e3460e825543a2ef32c0fde40616f9b3103000686e7dfa7f18622196c
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-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://soxebez.ru/wix?keyword=film+script+analysis+worksheet PDF link annotation
    • http://nenonazuf.scienceontheweb.net/how_do_i_reset_my_whirlpool_quiet_partner_dishwasher.pdfIn PDF document text
    • https://cdn.sqhk.co/mewedenemez/ejihial/screen_recorder_android_app_github.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/nasb_study_bible_large_print_indexed.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/digzrhd/92001911068.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/b2491491-5f2a-44bf-b71d-bc6c331ff03a/16986252306.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbccabe2-fa70-4aeb-bc91-3657c749b50d/carbs_in_taco_bell_sauce_packets.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/cisco_ipsec_vpn_client_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d7828e1-55d6-4337-a592-868110d90b23/moxolumexezeguma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f58a3dd-bb56-447b-8d3e-a46d57ae0dd3/where_is_the_lint_filter_on_a_top_loader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b2f5a44-ce71-4c2f-a5fc-43d4b1c84df7/microbiology_textbook_for_mbbs.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/24169753591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e4debba-0932-47a9-96da-a2f82cad5e42/how_to_change_my_homepage_on_microsoft_edge.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/3621745095.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/bunker_hill_security_dvr_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a59031e8-88b3-46fc-a00d-2c66d0ff114c/how_to_program_genie_2024_keypad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89b7c1fa-dbc7-4840-a771-c74421df1a4f/south_carlsbad_state_beach_campground_map.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/6794099800.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/dawadenoburif.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_off0000f120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF120 5384 bytes
SHA-256: 6951689dc1ad69ce3e0eb0a540b6729cb9a1fd960b47ae32083e3f5d8758b4e1
font_01_sfnt_off00010361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10361 10336 bytes
SHA-256: 3c407f54b7162788916a938e776dc470cdcaef666176ce54692c2e7743c7a06e

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