Malicious PDF — malware analysis report

Static analysis result for SHA-256 627c14c03297a311…

MALICIOUS

PDF

55.1 KB Created: 2020-10-25 15:59:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1f55455daac34e3eaaf094fdcb604e6a SHA-1: 1dcbd27b57cc57e68cbd89f96a6b5995c6b757a0 SHA-256: 627c14c03297a311f36fbbfc61b4d787fdfb6b5671262b10c21a3c0d591a93e5
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://ttraff.me/123?keyword=eddy+kim+the+manual+lirik In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f88f3d7b7e1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410952/normal_5f94ee3c44120.pdfIn PDF document text
    • https://lubukapilibuvi.weebly.com/uploads/1/3/4/0/134095968/58d41effcb2ce.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/3626760.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off000085d1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off000085d1.bin)
    • https://cdn.shopify.com/s/files/1/0497/4863/9897/files/swissmar_fondue_set_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1489/3980/files/gagibusuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3167/3024/files/74730588946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/bruce_r_mcconkie_talks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8007/6449/files/pajero_sport_manual_bekas_jakarta.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/manual_administracion_de_empresas.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/pifagexonaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3897/3345/files/enerlites_het01-c_programmable_timer_switch_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2931/8813/files/xonadobawusakarago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1701/9834/files/the_lorax_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/60963579062.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/bivamofovazaxid.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/25936715993.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/esl_word_search_puzzles.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/tazew.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/cacingan_pada_anak.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_off000085d1.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000b97d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000b97d.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5927 14588 bytes
SHA-256: 61169dedda7198df83e8551ef2a43d9bba8abb73b74389054352c3f9247622e0
font_01_sfnt_off000085d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D1 5012 bytes
SHA-256: 1dcde0666707696fc8e3d95251c044c5c6ba2aec94ad5ec088cb7958b4b17108
font_02_sfnt_off000096bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96BB 10344 bytes
SHA-256: 5e6cf6a05f061ea6ddd59f036d911acbb4864dbd63060aa34e977fb39d341b21
font_03_sfnt_off0000b97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB97D 16164 bytes
SHA-256: 4b52fd5da643d9c08cc0a86f773b2f024e3274f3f861dfcac100db1ef433cf06