Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1ef47643e96809…

MALICIOUS

PDF

43.1 KB Created: 2020-10-27 15:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: c5a8dc844e27e3853fe260d30a797ea2 SHA-1: a01849b8c237f431fede14d96639693ceadea9cc SHA-256: ea1ef47643e96809d9a59d0f33483b92e13135971ae604fba3f36f18536cd217
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cctraff.ru/pify?keyword=girl+scout+brownie+home+scientist+badge In PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zuvefusu_tewojawowebav.pdfIn PDF document text
    • https://sidunaxegizu.weebly.com/uploads/1/3/0/7/130776644/fudufive_xumixud_welinotatilo_tijulologas.pdfIn PDF document text
    • https://jutebipofan.weebly.com/uploads/1/3/4/3/134334370/50e370e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068d5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068d5.bin)
    • https://uploads.strikinglycdn.com/files/0841cd92-9c18-4e23-89cc-2615218f5a01/xexupod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b7d9c3-ee83-437b-889b-71b56ee6dd1b/93200217294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8301096-348f-4a97-9abf-67b72df4600e/wikas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91a9f3aa-d140-49d3-a181-b7762c3ab372/333535268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0df93dc4-2898-45e3-806d-971985e6d132/44037777102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ccb2af1-2be3-43f5-80a1-2ec41b2c4619/husqvarna_350_chainsaw_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/918d0200-3c5a-4a96-9b6a-c4cb7c1c5d68/wiriki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8168d8c2-e259-4eb7-8563-a0b59fb605bf/74328482506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f61e904-0c8c-4db7-9d62-06a5477b073c/jack_lalanne_power_juicer_express_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96695364-d1d7-4cde-ab38-383d9b1d98c7/voriseradusizejorewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8945/1927/files/68910016720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4640/1690/files/powershield_8_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/3045/1628/files/gta_5_mods_crazy4android.blogspot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/wusorizubizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5327/1208/files/boat_autopilot_system.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/mosfet_switching_circuit.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/puntos_maestros_auriculoterapia.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/44146350078.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/galavezup.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_00_sfnt_off000068d5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D5 5616 bytes
SHA-256: 3b56076a1693d4c63ddf6bbb20d4d383b2fb8dad5cb944e86a0e2e4c030f9b48
font_01_sfnt_off00007bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC8 10348 bytes
SHA-256: fe1c7d62fe0dee88fa3873edd55a30e36f23420d96ae6f5588774087dec86ee3