Malicious PDF — malware analysis report

Static analysis result for SHA-256 4795fc44ea49dea1…

MALICIOUS

PDF

60.6 KB Created: 2020-10-26 21:13:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: bb8c6df6e0dfafdcb1cf061be9268a19 SHA-1: b5c584649005ba8fa036b1c50ca29d621ac4447d SHA-256: 4795fc44ea49dea1955bb97ad2138f06d0550d311c66ea4848c50ab00d7383ad
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.me/pify?keyword=cartomancy+card+meanings+combinations+pdf In PDF document text
    • https://waxojokizubow.weebly.com/uploads/1/3/4/4/134482073/rafafujadu.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/e0d1dc6e9a6.pdfIn PDF document text
    • https://wikamarelifegef.weebly.com/uploads/1/3/4/3/134380256/xoserikekoviro.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/364074.pdfIn PDF document text
    • https://raxuzorufureraw.weebly.com/uploads/1/3/0/7/130775378/fejegopewelo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00009c69.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00009c69.bin)
    • http://www.daltonmaag.com/In extracted file (font_03_sfnt_off0000d5d4.bin)
    • https://uploads.strikinglycdn.com/files/2fe10994-a105-4c4c-978a-d25f51c3dbfc/bridgeport_milling_machine_manual_pd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581a523d-197f-4e8a-b231-f9fbe1c68671/10126176117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b080ae84-e322-4978-8304-83937a0a4328/dukuxuxaxugusubizito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec02245-93ae-421c-a1ce-c26e43294df6/mafovex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/323eb00c-a25a-49e5-af3e-44a5185a933a/descargar_adobe_audition_3._0.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71474541-7a9f-49c7-af3e-87fd23e50b1d/17769198930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00ce024-325e-452b-aadb-7576c2665eb5/el_retrato_de_carlota_epub_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9768/9763/files/refranes_y_su_significados_cortos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9823/3760/files/gcam_apk_for_mi_note_6_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/rikurawixuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/57965540029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/bowflex_blaze_home_gym_machine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5766/files/the_nonverbal_dictionary_of_gestures_signs__body_language_cues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0244/1124/files/46882296717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/eritrean_womens_center_tel_aviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1673/0799/files/77551646458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7747/5233/files/bemitidobenogozub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/839aeb2e-eb8d-44a1-a4f7-6895f79897bf/summertime_saga_magazines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021da035-f98e-4bf1-b1d7-d340cf4545be/intro_to_marketing_final_exam_study.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 extracted file (font_01_sfnt_off00009c69.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C3 2968 bytes
SHA-256: 771033003054101e9e87eceebec65dd17fac76109d4f476580acb9549e794e17
font_01_sfnt_off00009c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C69 5496 bytes
SHA-256: 59bbe2196a6ef97fb4bee016004b0380575837cbf1fd2ddbc19d8faef8aff829
font_02_sfnt_off0000af08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF08 11620 bytes
SHA-256: c2347f1400cd68c5fc0161f15b3798d2a3d5e99b9950fbae46d8b972043fd264
font_03_sfnt_off0000d5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34