Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd9b96db96e35516…

MALICIOUS

PDF

51.6 KB Created: 2020-10-16 05:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ea805a4d79a9d2e7ae079746ce82f3ac SHA-1: 32c7706f7dfc5dc2111741eca1982f54b5317614 SHA-256: dd9b96db96e35516795788f883f84e320d3b5c1ef49244b257fd253aa7747eb9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.club/pify?keyword=pokemon+fire+red+vi%25E1%25BB%2587t+h%25C3%25B3a+android In PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/4438330.pdfIn PDF document text
    • https://sulezesolujoseg.weebly.com/uploads/1/3/1/4/131452841/fabad-naxira.pdfIn PDF document text
    • https://topodomero.weebly.com/uploads/1/3/2/6/132696018/8f24b.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/podewafi_lamatuvowud_botemuzoxojabof_firamixivosib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f87ae581ae0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f8749a2bba8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f87e6bc50e6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f88fa2353001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f88c2b6605e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f88982415f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f8717f217365.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/knight_rider_2008_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/vagigexatojoxagomuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2817/1928/files/75874091595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7451/8691/files/tubemate_pro_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7975b50-dff3-4c2b-94e6-4d19c3f2d340/38595987744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a92caa7-5d34-4cfa-9b25-030c37cc0bde/78033670201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de851bdd-5537-416c-bf14-67bb3fa9ec5c/lazuzojuwuwokijeluketu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/cartel_de_cali_pacho_herrera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1093/0880/files/72998726782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3151/4266/files/loxasatabewukoketidobozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/bizhub_350_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4649/8204/files/la_princesa_y_el_sapo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 5368 bytes
SHA-256: a45ba9c6922ab4d8e876b45cb96940c3a9b97072b712d0e3b789144a4a23f6a4
font_01_sfnt_off0000787b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787B 10984 bytes
SHA-256: ae7310de0208ad1b36638068bfc1ad292851117c96003610df61b1ce8f42905b
font_02_sfnt_off00009d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D56 16264 bytes
SHA-256: 2d75792991cfe8b38775d3cc63fedc6a7139e29d8e70e85aa9190447b155b04b
font_03_sfnt_off0000b2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2FC 2612 bytes
SHA-256: 02252bc970d1a9b76ac44872468b572c87e72687af9ef0f8ca97da5e105eb4d8