Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ddd06bfb3b7d694…

MALICIOUS

PDF

76.2 KB Created: 2021-04-06 22:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 707380cd10cd1f44f06ba847bd7836fa SHA-1: 44b0d71f78d04e731e32aa1037b65426e3ea6d60 SHA-256: 9ddd06bfb3b7d694f2165d5938cce2ee1c3bfeec83ce4e6126a7befa97a8ec64
134 Risk Score

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 a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/123?utm_term=windows+10+enterprise+1903+iso PDF link annotation
    • https://cdn.sqhk.co/bipuzojafa/QTUsFie/29849556929.pdfIn PDF document text
    • http://sibasijiv.22web.org/cricbuzz_app_for_android_2._3.pdfIn PDF document text
    • http://vuletotam.scienceontheweb.net/zifiwesewu.pdfIn PDF document text
    • https://cdn.sqhk.co/kelulegawi/dies1VB/realmcraft_with_skins_export_to_minecraft_on_pc.pdfIn PDF document text
    • http://palupalukagu.mygamesonline.org/65944850274.pdfIn PDF document text
    • http://sinoxaju.mygamesonline.org/how_to_critique_actor_in_a_plays_hagrid.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/63513088589.pdfIn PDF document text
    • https://cdn.sqhk.co/redusebi/Kgghjia/98918679725.pdfIn PDF document text
    • https://cdn.sqhk.co/mebosuxular/fpgcFhf/gangs_of_london_amc_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/bexikerez/QcjkheP/15993622898.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/hf7DFgd/27171543766.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/iaShbUZ/umc_covid_19_testing_hours.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a97be2a3-bfb5-42de-bba9-b145341b31aa.filesusr.com/ugd/1f2860_09ee23be4a0b44cd9667c0d780026927.pdf?index=trueIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_53b230ef25cd4ad5bc4a79156d1d9eac.pdf?index=trueIn PDF document text
    • http://pevoxetawalob.rf.gd/rpg_maker_xp_keygen.pdfIn PDF document text
    • https://b993c520-4fc9-488d-8dda-35d8b3dc2713.filesusr.com/ugd/6f5492_31fa02998b104bb2bb7e88f524e7623c.pdf?index=trueIn PDF document text
    • http://bonanelokuweje.rf.gd/galude.pdfIn PDF document text
    • https://31f314b5-0768-4c24-bd49-4596ea953b46.filesusr.com/ugd/85a4b1_8994d122fae04475825946bb9d800786.pdf?index=trueIn PDF document text
    • http://pewafup.epizy.com/16541982914.pdfIn PDF document text
    • https://6196a4e6-b3b5-4a85-a139-4ec84e0a53d9.filesusr.com/ugd/d01287_8a9b7537a2274451819f772621df11e0.pdf?index=trueIn PDF document text
    • http://mesuwirafifi.rf.gd/patent_invalidity_search_report.pdfIn PDF document text
    • https://8eb0ff2f-1b5f-41fb-a82b-bf279dc7f43e.filesusr.com/ugd/868f76_91d42af54afe46b6b932cd714f6d137d.pdf?index=trueIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_4d7d00bd9b204103882aba56ff2d86fc.pdf?index=trueIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_d45eabfcb9bb41a2a75c60576ebf594c.pdf?index=trueIn 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_off0000eaed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAED 5328 bytes
SHA-256: e7b02aecfd28467a7b08a9d8c06803421370531ecd523d2b6b511d85485b27b8
font_01_sfnt_off0000fd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3D 11124 bytes
SHA-256: dcb598278d7e8b6529283df021f2e659bf7fcb3992283b86b35340acac041893

Open this report in the interactive analyzer, or submit your own file for analysis.