Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6dc2798cc6a0a89…

MALICIOUS

PDF

43.3 KB Created: 2020-10-14 19:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 30d18562cb2c3718a77df5ffe0f945ac SHA-1: e6aca4d2fb12d81b6631700e14ddeb715474743a SHA-256: e6dc2798cc6a0a898a99775ef6814d18654984bf81bf5bd55f49cfcc2f82cb97
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.link/pify?keyword=android+viewpager+indicator+dots In PDF document text
    • https://site-1042282.mozfiles.com/files/1042282/10022623619.pdfIn PDF document text
    • https://site-1041378.mozfiles.com/files/1041378/ronuzitafitotefanof.pdfIn PDF document text
    • https://site-1043564.mozfiles.com/files/1043564/99521515024.pdfIn PDF document text
    • https://site-1039509.mozfiles.com/files/1039509/xuxowugonugetusojube.pdfIn PDF document text
    • https://site-1043601.mozfiles.com/files/1043601/1841195044.pdfIn PDF document text
    • https://site-1040221.mozfiles.com/files/1040221/fojarobifitag.pdfIn PDF document text
    • https://site-1041210.mozfiles.com/files/1041210/lelaregokupetupajaz.pdfIn PDF document text
    • https://site-1036944.mozfiles.com/files/1036944/zinedave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f872079388a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f87089141c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f870e31521b4.pdfIn PDF document text
    • https://site-1038401.mozfiles.com/files/1038401/wapoz.pdfIn PDF document text
    • https://site-1038555.mozfiles.com/files/1038555/68905113973.pdfIn PDF document text
    • https://site-1036867.mozfiles.com/files/1036867/87635467674.pdfIn PDF document text
    • https://site-1043032.mozfiles.com/files/1043032/62725893863.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8243/9584/files/types_of_conflict_worksheet_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2251/5865/files/kutidosupate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5603/6520/files/libuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2092/9189/files/nurse_practitioners_business_practice_and_legal_guide_6th_edition_apa_citation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6168/5657/files/vegosabapulojuvatiruranux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1344/5544/files/google_drive_nightcrawler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5973/5456/files/tennocon_relay_key_2019.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_off00006b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2A 5348 bytes
SHA-256: 2de6e913d4fa0681f34a44c214a98fdcea0d3d0d1c1b60ba80a53db54b1009db
font_01_sfnt_off00007d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7C 10196 bytes
SHA-256: 4c3700a6ee0ff11c081d2719b624ede342e6e0a1a43923220bcd36aae1ef3f4b