Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d3d51622a234fc…

MALICIOUS

PDF

47.1 KB Created: 2020-10-25 21:42:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2c27478d3f3ad9643199ebaf2d2b75d5 SHA-1: 45d04c3c8243d82cdd36664b332195f6b5b9532a SHA-256: b2d3d51622a234fce741b13f4e46bfde7168ef1033946e324fddbbf2e862893e
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/pify?keyword=little+red+hen+preschool+worksheets In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/6aff9c04156.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/mokiwated.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/4188a.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/mabexa.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/kunivelulaga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f874d2ed33cb.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/9498234.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/8251036.pdfIn PDF document text
    • https://kanudepu.weebly.com/uploads/1/3/2/7/132740929/0ee18920.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/5b4afe34.pdfIn PDF document text
    • https://gifedoku.weebly.com/uploads/1/3/4/2/134234788/04c3bedc.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/toluxi-remitug.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/rilofovu.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/kagimuguvum.pdfIn PDF document text
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/b6680ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000711c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000711c.bin)
    • https://cdn.shopify.com/s/files/1/0499/3702/3134/files/15312670396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0604/9442/files/simms_g3_guide_river_tread_wading_boots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/kuxejozuditojap.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/beowulf_tolkien_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/tisulefalodosizal.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_off0000711c.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000711c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711C 5048 bytes
SHA-256: f44cb488f5026db4ae8094781961bcd165435b21ab9e0d3d5c6193771f6cbd55
font_01_sfnt_off00008248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8248 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00008ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD5 10648 bytes
SHA-256: 58f77d18c9c51106777c4efe002962a7b1f510485fecc1d00dd2a86da86cedfb

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