Malicious PDF — malware analysis report

Static analysis result for SHA-256 067389b7948cf4d2…

MALICIOUS

PDF

44.3 KB Created: 2020-09-30 11:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e4d6ebd9603d8c221141bcdfc26ed780 SHA-1: bc311704e2333a41f75b05eaf80cc062a64df74a SHA-256: 067389b7948cf4d2276ce4e03e4d6a2e5f6501ec976ff9f9140661b207e30fbb
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://cctraff.ru/strik?keyword=synthesize+information+from+relevant+literature+pdf In PDF document text
    • http://witer.richmondhillnaturopath.com/uploads/1/3/1/4/131407408/8543d5.pdfIn PDF document text
    • http://nusetib.jbclavaud.com/uploads/1/3/0/9/130969742/valetukudolusepud.pdfIn PDF document text
    • http://kakivuxan.cesariomateus.com/uploads/1/3/1/3/131398222/7864637.pdfIn PDF document text
    • http://vukuremow.genesisprimitivechurch.org/uploads/1/3/1/0/131070841/givuduvalipumur-lowozanakuwe-diwedages-seduraz.pdfIn PDF document text
    • https://site-1036828.mozfiles.com/files/1036828/44070839005.pdfIn PDF document text
    • https://site-1036955.mozfiles.com/files/1036955/6404860598.pdfIn PDF document text
    • http://menekawa.profejeff.com/uploads/1/3/1/1/131164435/fe27e6.pdfIn PDF document text
    • http://files.growmusicmissoula.com/uploads/1/3/2/7/132740194/kigotemisid.pdfIn PDF document text
    • http://deson.kathrynvbrinkman.com/uploads/1/3/0/9/130969559/poximifigugifimat.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/9eae136b-924c-4c6c-b32b-321fa6a3f7f7/bosuponibawitositatalig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8be69de-2fb0-4f9f-8483-dfda8174429e/jugudujumadiwedalat.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_off00006f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2C 5596 bytes
SHA-256: 5d0714053f28741279d0ff7bac682ea7209c7950cfa6ea58db88ed786443a760
font_01_sfnt_off00008222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 10064 bytes
SHA-256: 6072f31ae8c80d6f41144430f26b358ad4c243b895e4d69c2031e2c46fd72ece