Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aa4f088ed20bb65…

MALICIOUS

PDF

49.0 KB Created: 2020-10-23 18:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 55df1798093d576c6a9443a27cd02add SHA-1: 404cbfb994fa62f445e398ef0f32c7153b2aa000 SHA-256: 0aa4f088ed20bb65fe4a35f37709c1d054b9c5d706b35bb2092a48ffcec85fb7
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://cctraff.ru/strik?keyword=final+fantasy+12+fran In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/kuxow-pusalubexujurex.pdfIn PDF document text
    • https://zusaneji.weebly.com/uploads/1/3/0/8/130813769/zipurivapajelagu.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/pekemizigepesu.pdfIn PDF document text
    • https://nirejabepifu.weebly.com/uploads/1/3/4/2/134266024/dobanuwixomolu.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/7484368.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/kevesofivupoke-pavefaxutiv.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/sozasolenejur-zajitojorewusup.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/tugekewekuzefelux.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00008001.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00008001.bin)
    • https://uploads.strikinglycdn.com/files/c59e47a9-d1e0-4aca-8661-397574965b3c/gejufodexeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ecfd8d-0340-46c4-a048-9e28a1e87271/1675868734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561b1642-dd71-4f7d-9359-65b7d7a06826/nekibetakexemokurom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b03a03-ebe8-4207-a9c5-3c2dbab8a4bc/joint_last_will_and_testament_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd69c89-1dd0-4d8c-9453-456ead96305d/64989120033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c96fbad-4839-4bc9-bfc2-64912789d6ad/62375209558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a7d427-5223-40f9-8422-417a3108aa84/44568467615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75913e7-f3ee-4653-b266-ee400cf3a91f/jasoxipibixabosoxafi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/rubuma.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/jurukinakajojuwivides.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/callan_method_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7213/1750/files/sample_definition_in_research_methodology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8171/8165/files/what_does_faulty_coordination_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8573/3528/files/rokuwutironogifebik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7298/7046/files/english_grammar_free_download_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/6073/7222/files/3443776616.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_01_sfnt_off00008001.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 3244 bytes
SHA-256: 74f8d12cbef5a8dc4862e862f4233220dee491c583c713b8cbe8826d1badf724
font_01_sfnt_off00008001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8001 5004 bytes
SHA-256: a30d256b44c0bb585f15f1e7032d0b6e948956329ce78c84dc0e70dfb40ad9cf
font_02_sfnt_off00009123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9123 10876 bytes
SHA-256: 54357331dff73430b2a9a2399fc21bcbeea6cdbb8b087b6946e10a688b5b09b0