Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d662f43090c4e64…

MALICIOUS

PDF

49.2 KB Created: 2020-10-26 17:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 53fcecfdb03795cdf3eba4794305b68e SHA-1: a4226ae3038b7130a13dd678b796352db35a3d50 SHA-256: 0d662f43090c4e64bee941fe45af9672a2eaae200b7cfa577582beff77ec327b
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=intonation+in+the+grammar+of+english+pdf In PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/koguzul_lobuw_nizuribefumifo.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/zonifipifene_bofopifebodupar_semafaxoxovesuw_zafudidajol.pdfIn PDF document text
    • https://favasebuwakule.weebly.com/uploads/1/3/4/3/134328846/mitofepafowanutarepi.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/godekux.pdfIn PDF document text
    • https://besajiti.weebly.com/uploads/1/3/1/8/131856076/fapez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f87210ba6587.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5f8cee68d2949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368760/normal_5f8d19b74b6c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367952/normal_5f8c9d2fbab65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380076/normal_5f8fd2ee674dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380080/normal_5f8f2da11786f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f89a18b81d2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8dcba06faf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5f8b5e2724846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f8b1e3d59fd0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/56172778905.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/29487120383.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/74459980664.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/ballade_pour_adeline_noten_einfach.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e95d8b3-6ace-41ef-a423-f8e51a93ef16/mofunexuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d43ad31-be37-47e8-9f64-dfaf9beb6e4a/zopakogirogososigixolodab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbea374b-f172-4c18-89ca-9775ef4893bd/10068722018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84543c1-7750-4bf0-bc54-806994347160/donedudap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/pejazozopiwazarokezikos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/edit_text_in_picture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3847/files/85122298040.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_off0000813d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813D 5392 bytes
SHA-256: 686560f169facf811255415cf9bb99c47324bd7d7cc97fb50d12a2433b00d6c5
font_01_sfnt_off00009365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9365 10552 bytes
SHA-256: 8a66e229156ba6622fdf9dbfb80bd24919988bf188d15fdbea811dc1dad2e8e8