Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ab4c42b72986ce…

MALICIOUS

PDF

41.1 KB Created: 2020-10-16 00:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 07f6f9870257ba6607246e07eb83fd98 SHA-1: 5c7f700465b0ea22180c41c3bdb6a2380d96ff87 SHA-256: 34ab4c42b72986ce36f951fbf9189af7a68894f6b4c1104fb6217150d348e658
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=depository+institution+research+worksheet+answers In PDF document text
    • https://site-1038323.mozfiles.com/files/1038323/91862531364.pdfIn PDF document text
    • https://site-1037835.mozfiles.com/files/1037835/vasarefimipepejiwupobad.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/89715266072.pdfIn PDF document text
    • https://site-1040503.mozfiles.com/files/1040503/guluz.pdfIn PDF document text
    • https://site-1040386.mozfiles.com/files/1040386/19678500118.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/b48d71.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/5449688.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/ce8fcb9221c43a1.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/xopevu_vilugarokobijos_fimorekon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5f8841fb83da4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f87567315f61.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f25feb60-5113-4ae3-8ccd-fdb8453e0ce5/niloxumepepaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9425226-c6a5-46c4-953e-5aba6b59d200/42451775409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7acddbc1-7a99-4de6-b240-6ee0001c693f/55854369468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1249/0133/files/pokemon_platinum_walkthrough_distortion_world.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/34996936393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5649/1417/files/ruvagowupoluxitejivoxuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/classroom_teaching_skills_kenneth_moore.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

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_off00006240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 5244 bytes
SHA-256: 03fd21f2cf2000e70a46711824cecc1ca2bd2045d6c77bc08a121deb25799580
font_01_sfnt_off00007429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 10268 bytes
SHA-256: f779ede947d667239a0a427ac203238a9009655aa24968ddc0885b16fec29790

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