Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f1ef013cf6699a…

MALICIOUS

PDF

45.0 KB Created: 2020-11-01 07:49:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 37b00de1ce74f50ed0ae1915f679eeb9 SHA-1: 4355054000c32e4ba516efe868f7423db65136c2 SHA-256: 57f1ef013cf6699a0420dbbf578675dd5a9e884fa8b64d126c0be5410dd6667f
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=zignature+canned+dog+food+feeding+guide In PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/ronirilumikuv-buviwupotiweg-sobiral.pdfIn PDF document text
    • https://kugakisan.weebly.com/uploads/1/3/4/3/134390280/8c95032da201.pdfIn PDF document text
    • https://sobokiza.weebly.com/uploads/1/3/4/3/134363786/ee335a0b4816.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/korakaxafav.pdfIn PDF document text
    • https://tojetipa.weebly.com/uploads/1/3/4/2/134234581/a2a083365fda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f8bcd0721fc4.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007300.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007300.bin)
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/raniwuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e59ed90-10a0-4b9a-8d35-fc414dcf105d/41822159221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4676/5222/files/english_verb_tables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/221636fd-7e27-4f8e-bbd5-86d3f4739eec/warframe_equilibrium_farm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48234f80-a68b-41d5-9b09-576c5680a409/kojoraj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee014d1c-03c6-408a-b585-efb6e7c8c39b/lomarazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4300/3807/files/fedosufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066d7c0b-63ef-402c-b2fc-40175a4b2dff/povakenerisamiluraniv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b829ba-ba7e-47a9-a9b0-a67f81a73706/rugivixuzeda.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_off00007300.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7300 4936 bytes
SHA-256: 2d26a932196f37fba8c96a20ae71a6c3a867161edaa0a3f62b12bba3a1a23b7c
font_01_sfnt_off000083e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 10300 bytes
SHA-256: 9c62244760b091fef88d10f0c189e536d2693c67e81c329ad6a41f01e1023aab

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