Malicious PDF — malware analysis report

Static analysis result for SHA-256 879e50221e220439…

MALICIOUS

PDF

61.3 KB Created: 2020-10-23 21:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 86514b6cb637aed3a55e4dbffcb9907a SHA-1: 6ff28da69c6e6d2a4a669fada719e8ab204e46b9 SHA-256: 879e50221e22043905405f2fb7693ce91231b0dcb45f7da7b02509987ff1a952
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.club/aws?keyword=traduire+anglais+francais+fichier+pdf In PDF document text
    • https://jusujonolixutuw.weebly.com/uploads/1/3/1/3/131379247/5998930.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/bebewonatibubek-savobirasotuj-putipelunin-lizunetisewol.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/8430827.pdfIn PDF document text
    • https://zinikedefi.weebly.com/uploads/1/3/0/7/130740178/4024814.pdfIn PDF document text
    • https://zenefuzivoxog.weebly.com/uploads/1/3/4/1/134108933/8277012.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/826394ef-bfac-4d31-b74f-8d6cc0a0ca8c/wejubimikegedavuxojev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d185d2-ffa4-43b1-ba35-78ceb351a926/lemokijimomexavezuzigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86056db9-0340-485e-ad59-08408b5aa8a8/77561739674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ba090c-c88e-4e15-b9f4-0495abfe0e50/darisinegurotuvobuwof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8848/7603/files/lovebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5575/7467/files/mckinsey_artificial_intelligence_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3346/7317/files/35814163694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3784/6425/files/what_does_t_stand_for_in_the_soften_model_of_nonverbal_communication_in_presentations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6924/3037/files/super_adventure_box_daily_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/powamijikalasakixarewuniv.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/principios_de_la_arquitectura_sostenible.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/the_iliad_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/pusetaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/nurejex.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/sap_accounting_entries_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/embolia_liquido_amniotico.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/acervo_cultural.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/propped_cantilever_beam.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/wasokegukipil.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/outsourcing_ventajas_y_desventajas.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/bitsat_mock_test.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/medical_fitness_certificate_for_job.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_off0000ac85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC85 5368 bytes
SHA-256: 07d13c6f8e6b648528e27cd25b375818ec0ee3bc8708436a05c6a47a4f71c0a8
font_01_sfnt_off0000bec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC0 12344 bytes
SHA-256: bea2b369d044ee7109e20201b12a3eb44fb2fccc3a3ef54dcc7ebaaff31a431f