Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba41654360fdcd2…

MALICIOUS

PDF

44.5 KB Created: 2020-10-15 11:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b895ea64eb7658c84a2f0a9abbc71d6e SHA-1: ffde6b7bf94c2d945bc9c8b5fd742ef20898aa6a SHA-256: 1ba41654360fdcd2da3f58de2d365d4be2ad14809f353fa61c6a6ca5bbde7f72
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://ggtraff.ru/123?keyword=bounty+hunter+pioneer+505+metal+detector+manual In PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/4024422.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vunud.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/1f2f042291555f9.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/betilovudejadeb.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nojof.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.pdfIn PDF document text
    • https://site-1040507.mozfiles.com/files/1040507/38680932779.pdfIn PDF document text
    • https://site-1043177.mozfiles.com/files/1043177/vadepalapuduruje.pdfIn PDF document text
    • https://site-1038535.mozfiles.com/files/1038535/65051990177.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f8709e4eec1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f8716a79334e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f87a5fea1e75.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8301/5357/files/letra_para_ven_es_hora_de_adorarle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5281/3466/files/cvs_dupont_circle_minute_clinic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7937/1414/files/weber_protestant_ethic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0530/2168/files/craftsman_675_lawn_mower_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/34894167420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/principles_of_biology_1_lab_manual_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2667/files/nutrisystem_kits_in_stores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1490/5256/files/cost_accounting_notes_for_bcom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1354/1529/files/skechers_go_run_ultra_r_2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6001 5436 bytes
SHA-256: 825bcca7b07be9ee04a724fffc6c6bbd7b9e3ee4f8b8bbf51df90ea21889e6a8
font_01_sfnt_off00007256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7256 10700 bytes
SHA-256: 1475df2be604bd9863a1a27e9c7991def48c2c306467e13aa0386d15da56082f
font_02_sfnt_off00009670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9670 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333