Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea174cecb4da45a…

MALICIOUS

PDF

46.1 KB Created: 2020-10-11 11:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3dac15108f327acdab88e6ad18969886 SHA-1: e24a7dbbe1984c267b9877aa87a4026b9f2932ae SHA-256: eea174cecb4da45a2136b7a6ae432bd98d4f44d666e58562ac0cacd130439a43
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=frayer+model+template+editable In PDF document text
    • http://mogukuj.mccullycomfort.com/uploads/1/3/1/3/131380600/kowuresadego.pdfIn PDF document text
    • http://files.fivestargypsys.com/uploads/1/3/1/3/131383467/novisobopavos.pdfIn PDF document text
    • http://files.etowahncheritage.org/uploads/1/3/0/7/130739247/tinaji-relimuretipeko-dubujezozole.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/1/0486/9908/0854/files/96914877952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4378/1788/files/watch_shes_the_man_online_free_fmovies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/4048/1956/files/participial_phrases_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5393/6540/files/remoteapp_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669b6bbf-ba9c-4f00-85c9-f14c311aac1d/xazububisemotozatadulanot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaa7d13e-7013-4b74-a7a5-9d8554b61344/fovogelod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/suvelamifakiredenagasir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/168_cm_equals_in_inches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/4_to_16_decoder.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_off00006f41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F41 5124 bytes
SHA-256: ed897f2bd8ed12f5b9c29280aef554b6e58fa3c0c642c486d411c238853ac691
font_01_sfnt_off0000809d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809D 14000 bytes
SHA-256: 97112003157e5caf50d4ebdc627a5a2fe5d4e951ac001431946eec0eb929cd87