Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e93aa1758aed4d6…

MALICIOUS

PDF

44.8 KB Created: 2020-10-27 03:09:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b5abc77c107f1c6b2a35d6bfc0bce5b1 SHA-1: d8a026cde376907a3bb780ab563778554eaf008a SHA-256: 2e93aa1758aed4d6532545e33dda9dba27123e178dfbcd56863887b34dc91526
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.link/123?keyword=meadowlands+sports+complex+station In PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/xalipubow.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/zamupudebomimaze.pdfIn PDF document text
    • https://katolafafesol.weebly.com/uploads/1/3/4/4/134479470/9a05c67.pdfIn PDF document text
    • https://liziruji.weebly.com/uploads/1/3/4/3/134380663/kogesutoj-depex-dazixusud-femujirigo.pdfIn PDF document text
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/vasidosekike-nurusogodur.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/e0f292.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/jobajelilela-fikisivonim-sujuzu-dewajozexazaju.pdfIn PDF document text
    • https://jujodupif.weebly.com/uploads/1/3/2/3/132303189/8769015.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/boligosisaxatov.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006e15.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006e15.bin)
    • https://uploads.strikinglycdn.com/files/4f770421-5bee-44bd-817e-7caf08edaca7/beden_eitimi_kapaklar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ad256c5-c372-4b99-a547-b62077034bf0/dexibafisixikaxisuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8518d56b-a85d-4614-b44f-13eb6a19652a/all_time_low_dirty_laundry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/occupations_worksheets_for_preschool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0536/6431/files/konavejalasunexiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/folktales_from_around_the_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/historia_del_basquetbol_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2991/2488/files/senior_high_school_physics_curriculum_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/81173230905.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/carpentry_power_tools_list.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/83309987145.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_00_sfnt_off00006e15.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E15 5384 bytes
SHA-256: 913ff3a51ed3e0659a4ff418983918f2fee2ccaf03e55a5bb9b942d97c24180e
font_01_sfnt_off00008068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8068 10988 bytes
SHA-256: 77856561ae6730a357accab18178676b7bcc46fadd9e1806bfbe9b2bea5fcf64