Malicious PDF — malware analysis report

Static analysis result for SHA-256 62298ccc96755b8d…

MALICIOUS

PDF

49.0 KB Created: 2020-10-05 06:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 64d6acc5174e0051da0b71d7e9e880d0 SHA-1: 7ac07cc7fd7a25d383e9ad723ce9fa840cab0fbc SHA-256: 62298ccc96755b8dd64f1c2d10762e81bf9190bc0e662f35970b1b5059c2285b
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=let+it+go+flute+sheet+music+pdf In PDF document text
    • http://rofalux.gentleqigong.net/uploads/1/3/1/3/131379538/gebudolamidadal-zukomevefijo-rawukove-jupizezanizosax.pdfIn PDF document text
    • http://dibugav.cleanwellbeing.com/uploads/1/3/1/4/131408516/2851906.pdfIn PDF document text
    • http://xuxoliju.boxfit808.com/uploads/1/3/0/7/130776811/5a74f.pdfIn PDF document text
    • http://buwaji.kimhohlweg.co.uk/uploads/1/3/1/4/131437683/51a279.pdfIn PDF document text
    • http://wamoxapij.aaagospelminister.com/uploads/1/3/0/7/130739227/1657797.pdfIn PDF document text
    • http://veteve.spygamereviews.com/uploads/1/3/2/3/132302978/6b4966ae0a2e86b.pdfIn PDF document text
    • http://files.loomjewellery.com/uploads/1/3/1/8/131871556/romil.pdfIn PDF document text
    • http://files.babephotography.com/uploads/1/3/1/4/131453934/9311073.pdfIn PDF document text
    • http://files.nadiaohsp.com/uploads/1/3/1/0/131070394/9dc88a3c799e0b.pdfIn PDF document text
    • http://files.danssmallenginerepair.net/uploads/1/3/0/9/130969169/949e0dbb6264.pdfIn PDF document text
    • http://files.petercolefriedman.com/uploads/1/3/1/4/131409090/5703871.pdfIn PDF document text
    • http://bojuraped.carolynbeckphotography.com/uploads/1/3/0/8/130874411/7c9d99dcdad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/dfabf01a-6cb5-4637-960a-5552d3123666/lowikubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2126c3f-31bb-4744-b89a-94490da22fd3/41400174280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e966c9e8-12bb-42f2-a6c6-090c695f8aaf/8901250505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/535251e2-1028-4178-95f8-71bc3d6c2c06/69611734885.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 4980 bytes
SHA-256: a8e5e54c17c9f9bd777d993febf1ddd0d87423a5320f4701118b03e8ffdaea8f
font_01_sfnt_off00008581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8581 10260 bytes
SHA-256: 819832dbe9f24e25dfd7c6d0a1461a330e11ad5bf4f9a0fdd59a344d617b0346
font_02_sfnt_off0000a895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA895 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361