Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ddd70a015a0b6a…

MALICIOUS

PDF

42.0 KB Created: 2020-10-06 18:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ef4c5b59641a06dd63cfd03cec63df4e SHA-1: e42a07c61030dc717d793a4f62455cad1ec7e3a0 SHA-256: e9ddd70a015a0b6a069d2fde10c25318bda0e87d35c3e284167affda553171e9
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://ggtraff.ru/pify?keyword=barcelona+pavilion+design+concept In PDF document text
    • https://site-1039753.mozfiles.com/files/1039753/dobevakoxanifejujad.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/gokitilewedisoxeg.pdfIn PDF document text
    • https://site-1037860.mozfiles.com/files/1037860/gizoj.pdfIn PDF document text
    • https://site-1037858.mozfiles.com/files/1037858/divemi.pdfIn PDF document text
    • http://galuxaga.smallgroupsministry.com/uploads/1/3/0/8/130815026/4433684.pdfIn PDF document text
    • http://files.samanthaghayes.com/uploads/1/3/1/1/131164120/7969430.pdfIn PDF document text
    • http://files.stedmundsbx.org/uploads/1/3/1/8/131871907/kadibunatezad.pdfIn PDF document text
    • http://files.poughkeepsiepopculture.com/uploads/1/3/0/7/130776058/690736.pdfIn PDF document text
    • http://files.butterflyloveministry.org/uploads/1/3/0/7/130738859/7051663.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/1/0477/8790/1087/files/sence_or_sense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/linksys_ea6300_firmware_dd_wrt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/nosivagisigizik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6825/1548/files/rocky_mountain_juniper_bonsai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0556/7398/files/unidad_3_leccion_2_vocabulary_a_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81d6af6c-9e90-4afd-ad90-516dd3025952/75472279944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8723c84b-1090-497e-97c1-0357a86a7b15/58574104215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9708c62-cbfe-4875-9598-ab6c50c53af0/30576787130.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_off000065e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E8 5348 bytes
SHA-256: 425ce2abdd037fadd45ee419918f5f086df96da9f7e8a09a2d2b9c0a0730673e
font_01_sfnt_off0000782c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x782C 10172 bytes
SHA-256: e0abcdf28d15055c1f4fb28d77056599e9bdc9f18d0266a8c1d9a570905308f0

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