Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e80587e8680aa97…

MALICIOUS

PDF

74.9 KB Created: 2021-03-10 13:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 979fd12853116a7a5b7a52072168b5c3 SHA-1: 514806a698f5b44f5d969fe8b71e3fe5ce28650b SHA-256: 2e80587e8680aa9771f0a474e91904a593323ee2b0307f44c1a1761928de7349
194 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 0.9996

Heuristics 7

  • 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 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.
  • 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://xezojetit.ru/wix?keyword=las+aventuras+de+juan+planchard+pdf+free+download PDF link annotation
    • http://tipofeliluget.medianewsonline.com/knowledge_of_stock_market.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_60145dc4acda9.pdfIn PDF document text
    • https://ruzovaberup.weebly.com/uploads/1/3/4/6/134651658/707664.pdfIn PDF document text
    • https://vimexizud.weebly.com/uploads/1/3/4/7/134755563/ab3db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405929/normal_6013d845ce2fe.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/xuronakotuforo_gotexu_fewupitag_tovanovawiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_5fea34bb99518.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_5638111b1566415c804276ec029a31d1.pdf?index=trueIn PDF document text
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_ac5813d58309435b9cc54ffb97d7c737.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ad58b5e-eb3c-49d1-9f58-f56a7b0070cc/walid.pdfIn PDF document text
    • http://bodirinukamole.onlinewebshop.net/common_mistakes_in_spoken_english.pdfIn PDF document text
    • http://bidusibebawuz.onlinewebshop.net/how_to_install_cosco_scenera_car_seat_forward_facing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/041e7dd7-9b82-43e6-9626-e554f8fbfb22/make_your_own_python_text_adventure_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7755d21-27d9-4b0e-ab04-92086f406edd/4_elements_of_film_style.pdfIn PDF document text
    • https://11ca5eb4-0abe-4d5d-8073-3f36f6088e80.filesusr.com/ugd/8b62d8_d161fbc741d3495bb6930e351a80e860.pdf?index=trueIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_e3df9bd3720b40f48653a000304323a8.pdf?index=trueIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_af675351f39047e18c76a00d81ebce65.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3b5d98a-b10a-4df3-a945-2dca2b0bf6e3/21208336484.pdfIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_6d94bfc4f7a54f45930e7349b8847d96.pdf?index=trueIn PDF document text
    • https://56148a0a-83a3-4003-94ff-78d3044b7c00.filesusr.com/ugd/6f5f23_bf47b55f74404353a5c8cc6f70f7be42.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e384400-c2bd-4867-b66a-1f6e2a7c71d8/should_you_wake_someone_up_from_a_dream.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_off0000e682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE682 5412 bytes
SHA-256: d9e804380dadeff071c43b9bbbd8ab2d672c659ea05b5861db2bba0b0ecb6b30
font_01_sfnt_off0000f902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF902 10764 bytes
SHA-256: 1b397b4a73612361f452639043400baaa0602f04a69a654bb12326d25d639f64