Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2c17d430fcfcbb…

MALICIOUS

PDF

244.0 KB Created: 2021-04-06 09:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 46b5599af8d38646c5648a4be97db71c SHA-1: ca26f22a654dde589eb17674bb4114177e8f42de SHA-256: 5e2c17d430fcfcbbf5e1fa691a467a7cc4ad53b7e5e797c2017d4888196b382b
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The presence of embedded URLs, including one pointing to 'seumenha.ru' with a keyword suggesting software download, combined with a heuristic for a visual download button, strongly suggests a lure to download unwanted or malicious software. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=poweramp+full+apk+reddit PDF link annotation
    • http://xazixovabifin.medianewsonline.com/structure_of_immunoglobulins.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_604d19b016461.pdfIn PDF document text
    • https://cdn.sqhk.co/pepegizeso/aB3OBf3/business_vocabulary_builder_intermediate.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/Xibjhgr/coupons_for_walmart_delivery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_605d6611f1892.pdfIn PDF document text
    • http://gokawojop.scienceontheweb.net/jigozixegatas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491175/normal_60471350ac16b.pdfIn PDF document text
    • http://xuvaxujogilo.mygamesonline.org/59121255274.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_b5948e47160a42d1b2c1a095a5e3ffd5.pdf?index=trueIn PDF document text
    • https://2a403a33-5f6e-4534-96f9-742aa7325afc.filesusr.com/ugd/d2da83_abda53d0de9a487399a1554938f07c8d.pdf?index=trueIn PDF document text
    • https://4f65703b-d4c0-4c9c-9e30-73c8cc83ec5d.filesusr.com/ugd/54fa57_6298804e11b149f3adeef2c5506ef1be.pdf?index=trueIn PDF document text
    • http://bidajalej.onlinewebshop.net/58885574997.pdfIn PDF document text
    • http://fatavetotujel.onlinewebshop.net/ansi_c_language_reference_manual.pdfIn PDF document text
    • https://29c5b005-6627-40e3-9da1-9f9d3dbc34dc.filesusr.com/ugd/7ad284_477aca498c1e4603acbcfde3898b34c5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ccd9a0c-83af-4a84-9f3c-8b62746f5c8e/zafilokajemuliviko.pdfIn PDF document text
    • https://562a32fb-e9c8-4d8f-ac7e-a760da58c396.filesusr.com/ugd/68ec97_8d76ae3591864b29a5154048ed6292f8.pdf?index=trueIn PDF document text
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_725a8cb8ba2549578ed181c6e017b319.pdf?index=trueIn PDF document text
    • https://e05653fc-386e-4c8b-889d-738aee72c63e.filesusr.com/ugd/62421a_9fef2ecb44944ffd988717e1b4dcbc69.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/120151d8-0d3d-4056-86b9-0224c2e1bd25/how_much_do_the_dancing_with_the_stars_get_paid.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36B36 5164 bytes
SHA-256: c1a90974acaa409d01c8983db7b3a5abc00ee3948fc653ee00a299c42d7a75d2
font_01_sfnt_off00037cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37CC6 13476 bytes
SHA-256: fa5c6d43efa3cb317a54876e7055fdf1a83f1b068efc46ef70c2e4cc5514c8b9
font_02_sfnt_off0003a9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A9E1 16464 bytes
SHA-256: 67ebf8db144381b55de54d106172f79ea6abddeff296b3d8295e8d2704d6e0d7

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