Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dbb49ad1c06955…

MALICIOUS

PDF

95.3 KB Created: 2021-03-14 11:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07aaaece68305a65ecb73c741868e5c1 SHA-1: 50a6036ba514ff229af65f61dd1bbfd56d3dace9 SHA-256: b0dbb49ad1c069554d76fe7532f41c6a9472f515136343037f0a80b9daf52f67
196 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic indicates the content is designed to trick users into believing they will receive a prize or funds, requiring them to pay a fee or provide information. The document contains an embedded URL that likely leads to further malicious content or phishing pages, consistent with an advance-fee scam delivered via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/123?utm_term=business+model+ppt+template
    • https://fanamavikere.weebly.com/uploads/1/3/4/6/134610997/786913238d2389.pdf
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/2a3838bb01094.pdf
    • https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/1831763.pdf
    • https://tugadebijo.weebly.com/uploads/1/3/4/0/134042488/1f093af.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_f69b1a6c3b3044c8844399b1b3830e01.pdf?index=true
    • https://uploads.strikinglycdn.com/files/592c5728-2ccb-44a9-bb2c-42afeb693b7b/zelda_links_awakening_switch_walkthrough_goponga_swamp.pdf
    • https://uploads.strikinglycdn.com/files/7bad929e-0b3d-4b62-bc75-498f0e8a001e/wubanejesag.pdf
    • https://uploads.strikinglycdn.com/files/1110f760-6e0e-4385-8f5a-0c210c9ed152/91899442625.pdf
    • https://uploads.strikinglycdn.com/files/1ba0dec7-4cdb-4956-9f98-1063fde80f56/divine_mercy_catholic_church_north_courtenay_parkway_merritt_island_fl.pdf
    • https://uploads.strikinglycdn.com/files/60c20435-22a9-4b98-abb2-af25615c3080/the_third_industrial_revolution_documentary.pdf
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_8e369fc22d5d41f58d34d75a04182a9a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/697c8100-016c-4a84-92c6-686cbc2009af/descargar_popurri_de_antony_santos_viejas_en_vivo.pdf
    • https://s3.amazonaws.com/mejigavukolu/ratoragizivagubewur.pdf
    • https://uploads.strikinglycdn.com/files/33cc187a-ff14-4d3e-a6c9-45017458bccc/what_are_the_parts_of_a_circle_graph.pdf
    • https://s3.amazonaws.com/paxuvagal/how_do_i_get_into_the_bios_on_a_panasonic_toughbook.pdf
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_867b8f29190741e48ab48158f09e0ca3.pdf?index=true
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_71fbe5fa5ad04d209b0ba7894dc96a29.pdf?index=true
    • https://uploads.strikinglycdn.com/files/896322be-6f86-43e4-b197-a30fe5be7b64/bijuxefek.pdf
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_ef1ba04609564e1f983e746facb1aca9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f5add909-bccd-4eba-bae2-f69e09ca821f/2008_dodge_caliber_dash_lights_meaning.pdf
    • https://uploads.strikinglycdn.com/files/19a7a706-43c7-4747-bcfd-4163b2fe5ffa/gabexor.pdf
    • https://38c8c62e-1823-4c1e-8220-bc61efcc8a1c.filesusr.com/ugd/c24b9b_fad049b985a14e31a3a71b563006a58a.pdf?index=true
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_de614d43b5e9404c8e72c7d20e61625a.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013884.bin
fd798e220b623d0574893ccd114167138998733fef5ebcf6846932b79c704cf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13884 5060 bytes
font_01_sfnt_off000149a3.bin
9d2cfd709835d56e1bfe3756c5b110ef62f74f5221e4e12beca03bc13fc446ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149A3 11292 bytes

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