Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46167ba3fb65c1d…

MALICIOUS

PDF

41.1 KB Created: 2020-10-08 01:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: eaf64603046ed86d6c98e03c18210ed7 SHA-1: 64a5a3baafb95a0655276c7cf6979809375f1fc9 SHA-256: c46167ba3fb65c1d3b3444642a21d5004f00b98e4daf882d3c1f55e374ed7c2e
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=royal+purple+transmission+fluid In PDF document text
    • http://files.newlife-hm.com/uploads/1/3/1/4/131410007/6736696.pdfIn PDF document text
    • http://files.sailingscribblingandcycling.com/uploads/1/3/1/4/131454986/074781.pdfIn PDF document text
    • http://budidote.expeditiondance.org/uploads/1/3/0/9/130969744/2d20e030ab9.pdfIn PDF document text
    • https://site-1036819.mozfiles.com/files/1036819/85609447567.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/mobadazobevew.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/1/0436/9409/6539/files/charles_trenet_la_mer_other_recordings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8670/3511/files/disirivisexowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3497/9733/files/xazuzojerawamix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/8249/2325/files/eclipse_phase_backgrounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/diatessaron_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6904/6935/files/bufesarisovur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0999/1075/files/eso_do_master_weapons_drop_on_normal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6573/0201/files/zonalojisamubavagopefa.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_off00006502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6502 5296 bytes
SHA-256: 6581386e602352b82bde9ecfefa9e1cdf1998a35020c524c6500e1fdd67df792
font_01_sfnt_off000076fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FD 9648 bytes
SHA-256: 2bc41b730b533f227563420872254af8d76c0e2d8fefe3c62e20cb5bc6e05731