Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4f3d4bbdadad8a…

MALICIOUS

PDF

44.1 KB Created: 2020-10-26 20:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e921b826703873d092ad6cdd14d30d75 SHA-1: c7b93c1e443be89404f967ca1d950cd300f7f254 SHA-256: 8e4f3d4bbdadad8ada599932c178f5fa7178c414fa49edcf30ddf162d5c32c7d
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=smallville+season+9+cast In PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/7037811.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/62f6eb8a0c.pdfIn PDF document text
    • https://kakezilek.weebly.com/uploads/1/3/4/4/134401463/pinexim_kasaj_nikeserajiwen_vawokaxu.pdfIn PDF document text
    • https://refanoripusegu.weebly.com/uploads/1/3/4/3/134306014/jadurenezakoxi-motugorebobepe-pagobovelumom.pdfIn PDF document text
    • https://jonipafatanepa.weebly.com/uploads/1/3/2/7/132741476/gelurorizapov.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e6c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e6c.bin)
    • https://cdn.shopify.com/s/files/1/0484/2445/2254/files/turtle_beach_px22_xbox_one.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9852/7638/files/tivonimizagibaroweremo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7456/7329/files/83389656082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8781/3539/files/prezzo_drinks_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6223/0679/files/42252513474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/download_fouad_whatsapp_mod_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2880843-6339-4f84-90f9-f66fed2b944e/napepad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08aed5ee-89ad-442d-b2f4-66afecf7c4cb/99068757411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa6cacb9-74b3-4709-89aa-2b6f24c7e8f3/akku_lgdas31865_amps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a97b8bd-afe7-4afb-98dc-ad378926b626/fundamentos_de_la_economia_silvestre_mendez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3c4ba21-8d32-4111-bb6a-b4c993e1ef32/kepemaj.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/tokegimobobareleg.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/medical_certificate_format_for_admission.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_00_sfnt_off00006e6c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6C 5168 bytes
SHA-256: 6077963e855a7bbdbf48dc821b80586efabf8c01c6117d33d111bec0f07ac84a
font_01_sfnt_off00007fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEA 10456 bytes
SHA-256: 0a27139d09baa9fb0ccb3b018362b8fa95401451a1691346946f818e21540caf