Malicious PDF — malware analysis report

Static analysis result for SHA-256 015a8d2c28a97033…

MALICIOUS

PDF

43.4 KB Created: 2020-11-08 16:30:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 65da478b53fe9b0353881723a08840f5 SHA-1: 04b5052e8b9c57bd6a33f99f5599acc30e266351 SHA-256: 015a8d2c28a970336204f72d9f4941dd749836a6a73bdeaecd110ffd3d4824d7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=g4+strain+leafly PDF link annotation
    • https://nexajatolotol.weebly.com/uploads/1/3/4/3/134308242/pokenawapedozisabid.pdfIn PDF document text
    • https://fadusoga.weebly.com/uploads/1/3/0/7/130739873/lugaweti.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/6848583.pdfIn PDF document text
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/8041904.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/262e492337.pdfIn PDF document text
    • https://zewosesivate.weebly.com/uploads/1/3/4/5/134591998/lajot.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/kuwoxujigebek.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/nepopawowas.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/razemupunemim.pdfIn PDF document text
    • https://giligigava.weebly.com/uploads/1/3/4/4/134494785/5242960.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/38dd0985-a7be-43e8-9976-b75bc2ce09d9/swtor_companion_romance_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/cervical_cancer_staging_2018.pdfIn PDF document text
    • https://gigevuko.files.wordpress.com/2020/11/1554592316.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/wazasusegupaxusijip.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/32451880592.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_off00005d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 4660 bytes
SHA-256: f727b0d0419ae0a78f7300e269dfba9945eaa4367b3abaefc7bd245aa09d2ee0
font_01_sfnt_off00006d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7D 10632 bytes
SHA-256: ace824c66c931ce9839d2693ceac8cd63118d5e0bb074d658aadd32366881eb8
font_02_sfnt_off000091b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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