Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5772c02174f8add…

MALICIOUS

PDF

43.6 KB Created: 2020-10-26 02:23:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 27feca825bfb99d07794eb50cf73d18e SHA-1: 733125751e6135d76a29a718eb914d3d61602c30 SHA-256: a5772c02174f8add8fd3c4b13a2bc0fd876d9979b4f465ec1482c2115519dc46
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.me/123?keyword=content+analysis+research+paper+pdf In PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/pagen-mugudimu.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/2839228.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/2308353.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ponekizasotefedat.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/9181155.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/101601.pdfIn PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/povumino.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/2122772266372.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/zanadutut_wexudafenatogun_jetomefoja.pdfIn PDF document text
    • https://vupimolafi.weebly.com/uploads/1/3/1/3/131398504/nikax_xofaza_xikata.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/1/0461/4730/5635/files/33897463145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3425/4741/files/use_proxy_firefox_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4956/9434/files/raxubune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1102/3270/files/beyonce_vma_performance_2014_vimeo.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/basics_of_electrical_engineering_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/aditivos_quimicos_e_suas_funes.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/8x8_shed_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e260fb7a-91a3-4e3b-8b73-2b59eb601d47/nanosul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1864b3b1-2fed-41a0-b227-8f7b1b0cdb1d/new_hampshire_vodka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960efd71-e083-4c1a-b37a-54300256ca18/four_five_seconds_mp3_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d751dd62-2f8e-45fb-9907-8beb0cd8156b/fanopivumepimuxa.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_off00006c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C93 5248 bytes
SHA-256: 1c7e1521b2ca7fe45be6edb4f042aebd6d59ae458a1f4851c1edd51f2914d443
font_01_sfnt_off00007e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6F 10352 bytes
SHA-256: 8f1304fd832507f19b58c87911dbf94a908bfb4de8eb5d797eb6bf227ab50390

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